Reveal the top four cards of your library. You may put a creature card from among them onto the battlefield. It gains "At the beginning of your end step, return this creature to its owner's hand." Then put the rest of the cards revealed this way on the bottom of your library in any order.

+1: You gain 2 life.

-1: Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.

-6: Create a white Avatar creature token. It has "This creature's power and toughness are each equal to your life total."

+1: Until end of turn, up to one target creature gets +1/+1 and gains first strike, vigilance, and lifelink.

-2: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control.

-7: You get an emblem with "If a source would deal damage to you or a planeswalker you control, prevent all but 1 of that damage."

+1: Until end of turn, up to one target creature gets +2/+2 and gains vigilance and haste.

0: Create a 2/2 green Wolf creature token. Transform Arlinn Kord.

+1: Creatures you control get +1/+1 and gain trample until end of turn.

-1: Arlinn, Embraced by the Moon deals 3 damage to any target. Transform Arlinn, Embraced by the Moon.

-6: You get an emblem with "Creatures you control have haste and '{T}: This creature deals damage equal to its power to any target.'"

Flying, vigilance, haste

Whenever Aurelia, the Warleader attacks for the first time each turn, untap all creatures you control. After this phase, there is an additional combat phase.

Azorius Chancery enters the battlefield tapped.

When Azorius Chancery enters the battlefield, return a land you control to its owner's hand.

{T}: Add {W}{U}.

Azorius Guildgate enters the battlefield tapped.

{T}: Add {W} or {U}.

({T}: Add {B} or {R}.)

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Boros Garrison enters the battlefield tapped.

When Boros Garrison enters the battlefield, return a land you control to its owner's hand.

{T}: Add {R}{W}.

When you cast this spell, you may return target Angel or Human creature card from your graveyard to the battlefield.

Flying, vigilance

(Melds with Gisela, the Broken Blade.)

Indestructible

{T}: Add {C}.

{5}, {T}: Add five mana in any combination of colors.

Destroy target nonlegendary creature.

+1: Chandra Nalaar deals 1 damage to target player or planeswalker.

-X: Chandra Nalaar deals X damage to target creature.

-8: Chandra Nalaar deals 10 damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.

+1: Exile the top card of your library. You may cast that card. If you don't, Chandra, Torch of Defiance deals 2 damage to each opponent.

+1: Add {R}{R}.

-3: Chandra, Torch of Defiance deals 4 damage to target creature.

-7: You get an emblem with "Whenever you cast a spell, this emblem deals 5 damage to any target."

Clifftop Retreat enters the battlefield tapped unless you control a Mountain or a Plains.

{T}: Add {R} or {W}.

Creatures you control get +3/+3.

{T}: Add one mana of any color in your commander's color identity.

This spell can't be countered.

Counter target spell you don't control.

Overload {1}{U}{U}{R} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

+1: Target player draws two cards, then discards two cards.

-2: Gain control of target artifact.

-6: You get an emblem with "Whenever you cast a spell that targets one or more permanents, gain control of those permanents."

Dimir Aqueduct enters the battlefield tapped.

When Dimir Aqueduct enters the battlefield, return a land you control to its owner's hand.

{T}: Add {U}{B}.

+1: Look at the top card of your library. If it's a creature card, you may reveal it and put it into your hand.

-2: Target creature you control fights another target creature.

-7: You get an emblem with "Creatures you control have double strike, trample, hexproof, and haste."

+1: Until your next turn, up to one target creature gets -3/-0 and its activated abilities can't be activated.

-1: You gain 2 life and draw a card.

-7: You get an emblem with "Your opponents can't untap more than two permanents during their untap steps."

This spell can't be countered.

When you cast this spell, take an extra turn after this one.

Flying, protection from spells that are one or more colors, annihilator 6

When Emrakul, the Aeons Torn is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

This spell costs {1} less to cast for each card type among cards in your graveyard.

When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn.

Flying, trample, protection from instants

Search your library for two cards. Put one into your hand and the other into your graveyard. Then shuffle.

Flying

Battalion -- Whenever Firemane Avenger and at least two other creatures attack, Firemane Avenger deals 3 damage to any target and you gain 3 life.

Forsaken Sanctuary enters the battlefield tapped.

{T}: Add {W} or {B}.

Frost Marsh enters the battlefield tapped.

{T}: Add {U} or {B}.

+1: Untap two target lands.

-1: Create a 3/3 green Beast creature token.

-4: Creatures you control get +3/+3 and gain trample until end of turn.

Flying, haste

Whenever a creature dealt damage by Garza Zol, Plague Queen this turn dies, put a +1/+1 counter on Garza Zol.

Whenever Garza Zol deals combat damage to a player, you may draw a card.

+1: Until your next turn, prevent all damage target permanent would deal.

0: Until end of turn, Gideon of the Trials becomes a 4/4 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn.

0: You get an emblem with "As long as you control a Gideon planeswalker, you can't lose the game and your opponents can't win the game."

+1: Put a loyalty counter on Gideon, Champion of Justice for each creature target opponent controls.

0: Until end of turn, Gideon, Champion of Justice becomes a Human Soldier creature with power and toughness each equal to the number of loyalty counters on him and gains indestructible. He's still a planeswalker. Prevent all damage that would be dealt to him this turn.

-15: Exile all other permanents.

{T}: Add three mana of any one color.

Flying, first strike, lifelink

At the beginning of your end step, if you both own and control Gisela, the Broken Blade and a creature named Bruna, the Fading Light, exile them, then meld them into Brisela, Voice of Nightmares.

Golgari Guildgate enters the battlefield tapped.

{T}: Add {B} or {G}.

Golgari Rot Farm enters the battlefield tapped.

When Golgari Rot Farm enters the battlefield, return a land you control to its owner's hand.

{T}: Add {B}{G}.

Gruul Guildgate enters the battlefield tapped.

{T}: Add {R} or {G}.

At the beginning of combat on your turn, put a +1/+1 counter on target creature you control. Then if that creature has three or more +1/+1 counters on it, transform Hadana's Climb.

(Transforms from Hadana's Climb.)

{T}: Add one mana of any color.

{1}{G}{U}, {T}: Target creature you control gains flying and gets +X/+X until end of turn, where X is its power.

Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island.

{T}: Add {G} or {U}.

Inspiring Vantage enters the battlefield tapped unless you control two or fewer other lands.

{T}: Add {R} or {W}.

Isolated Chapel enters the battlefield tapped unless you control a Plains or a Swamp.

{T}: Add {W} or {B}.

Flying

Whenever a creature attacks you or a planeswalker you control, you may draw a card.

Izzet Boilerworks enters the battlefield tapped.

When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand.

{T}: Add {U}{R}.

+2: Each player draws a card.

-1: Target player draws a card.

-10: Target player mills twenty cards.

+1: Until your next turn, whenever a creature an opponent controls attacks, it gets -1/-0 until end of turn.

-2: Reveal the top three cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other on the bottom of your library in any order.

-8: For each player, search that player's library for a nonland card and exile it, then that player shuffles. You may cast those cards without paying their mana costs.

+1: Scry 1, then draw a card.

-2: Return target creature to its owner's hand.

-8: You get an emblem with "Whenever an opponent casts their first spell each turn, counter that spell."

{T}: Draw a card, then discard a card. If there are five or more cards in your graveyard, exile Jace, Vryn's Prodigy, then return him to the battlefield transformed under his owner's control.

+1: Up to one target creature gets -2/-0 until your next turn.

-3: You may cast target instant or sorcery card from your graveyard this turn. If that spell would be put into your graveyard, exile it instead.

-9: You get an emblem with "Whenever you cast a spell, target opponent mills five cards."

Flying

You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast.

Jungle Hollow enters the battlefield tapped.

When Jungle Hollow enters the battlefield, you gain 1 life.

{T}: Add {B} or {G}.

+1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it.

-1: Put a card you own with a silver counter on it from exile into your hand.

-2: Create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

+1: Untap up to one target creature and up to one target land.

-2: Reveal the top four cards of your library. You may put a creature card and/or a land card from among them into your hand. Put the rest into your graveyard.

-8: You get an emblem with "Whenever a creature enters the battlefield under your control, you may have it fight target creature." Then create three 8/8 blue Octopus creature tokens.

+1: Until your next turn, prevent all damage that would be dealt to and dealt by target permanent an opponent controls.

-1: Draw a card. You may play an additional land this turn.

-5: You get an emblem with "At the beginning of your end step, create a 9/9 blue Kraken creature token."

This spell costs {1} less to cast for each 1 life you gained this turn.

First strike, lifelink

Pay 5 life: Put three +1/+1 counters on Licia, Sanguine Tribune. Activate only during your turn and only once each turn.

+1: Target player discards a card.

-2: Search your library for a card, then shuffle and put that card on top.

-8: Put all creature cards from all graveyards onto the battlefield under your control.

+1: Each player discards a card.

-2: Target player sacrifices a creature.

-6: Separate all permanents target player controls into two piles. That player sacrifices all permanents in the pile of their choice.

{T}, Pay 1 life: Add one mana of any color.

Maze's End enters the battlefield tapped.

{T}: Add {C}.

{3}, {T}, Return Maze's End to its owner's hand: Search your library for a Gate card, put it onto the battlefield, then shuffle. If you control ten or more Gates with different names, you win the game.

Meandering River enters the battlefield tapped.

{T}: Add {W} or {U}.

+2: You may discard a card. If you do, draw a card.

-2: Exile target enchantment, tapped artifact, or tapped creature.

-8: Search your library for an artifact or creature card, put it onto the battlefield, then shuffle. It gains haste. Return it to your hand at the beginning of the next end step.

+2: Create a 1/1 white Kor Soldier creature token. You may attach an Equipment you control to it.

-2: You may put an Equipment card from your hand or graveyard onto the battlefield.

-10: Create a colorless Equipment artifact token named Stoneforged Blade. It has indestructible, "Equipped creature gets +5/+5 and has double strike," and equip {0}.

Nahiri, the Lithomancer can be your commander.

+1: Look at the top card of your library. If it's a noncreature, nonland card, you may reveal it and put it into your hand.

-2: When you cast your next instant or sorcery spell from your hand this turn, it gains rebound. (Exile the spell as it resolves. At the beginning of your next upkeep, you may cast that card from exile without paying its mana cost.)

-9: You get an emblem with "Your opponents can't cast noncreature spells."

First strike, hexproof

Whenever Narset, Enlightened Master attacks, exile the top four cards of your library. Until end of turn, you may cast noncreature spells from among those cards without paying their mana costs.

Needle Spires enters the battlefield tapped.

{T}: Add {R} or {W}.

{2}{R}{W}: Needle Spires becomes a 2/1 red and white Elemental creature with double strike until end of turn. It's still a land.

+3: Destroy target noncreature permanent.

-2: Gain control of target creature.

-9: Nicol Bolas, Planeswalker deals 7 damage to target player or planeswalker. That player or that planeswalker's controller discards seven cards, then sacrifices seven permanents.

When Oath of Chandra enters the battlefield, it deals 3 damage to target creature an opponent controls.

At the beginning of each end step, if a planeswalker entered the battlefield under your control this turn, Oath of Chandra deals 2 damage to each opponent.

When Oath of Gideon enters the battlefield, create two 1/1 white Kor Ally creature tokens.

Each planeswalker you control enters the battlefield with an additional loyalty counter on it.

When Oath of Jace enters the battlefield, draw three cards, then discard two cards.

At the beginning of your upkeep, scry X, where X is the number of planeswalkers you control.

When Oath of Liliana enters the battlefield, each opponent sacrifices a creature.

At the beginning of each end step, if a planeswalker entered the battlefield under your control this turn, create a 2/2 black Zombie creature token.

When Oath of Teferi enters the battlefield, exile another target permanent you control. Return it to the battlefield under its owner's control at the beginning of the next end step.

You may activate the loyalty abilities of planeswalkers you control twice each turn rather than only once.

Flying

{1}{R}: Olivia Voldaren deals 1 damage to another target creature. That creature becomes a Vampire in addition to its other types. Put a +1/+1 counter on Olivia Voldaren.

{3}{B}{B}: Gain control of target Vampire for as long as you control Olivia Voldaren.

Orzhov Guildgate enters the battlefield tapped.

{T}: Add {W} or {B}.

As Painter's Servant enters the battlefield, choose a color.

All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.

As Port Town enters the battlefield, you may reveal a Plains or Island card from your hand. If you don't, Port Town enters the battlefield tapped.

{T}: Add {W} or {U}.

Prime Speaker Zegana enters the battlefield with X +1/+1 counters on it, where X is the greatest power among other creatures you control.

When Prime Speaker Zegana enters the battlefield, draw cards equal to its power.

Rakdos Carnarium enters the battlefield tapped.

When Rakdos Carnarium enters the battlefield, return a land you control to its owner's hand.

{T}: Add {B}{R}.

Rakdos Guildgate enters the battlefield tapped.

{T}: Add {B} or {R}.

+1: Tap target permanent, then untap another target permanent.

-2: Ral Zarek deals 3 damage to any target.

-7: Flip five coins. Take an extra turn after this one for each coin that comes up heads.

Enchant creature

Enchanted creature gets +1/+1 for each card in its controller's hand.

At the beginning of the draw step of enchanted creature's controller, that player draws an additional card.

You may choose not to untap Rubinia Soulsinger during your untap step.

{T}: Gain control of target creature for as long as you control Rubinia and Rubinia remains tapped.

+1: Draw a card, then add one mana of any color.

-2: Create a 4/4 red Dragon creature token with flying.

-8: Search your library for any number of Dragon creature cards, put them onto the battlefield, then shuffle.

+1: You may discard a card. If you do, draw a card.

+1: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells.

-7: Create four 5/5 red Dragon creature tokens with flying.

+1: Until end of turn, Sarkhan, the Dragonspeaker becomes a legendary 4/4 red Dragon creature with flying, indestructible, and haste. (He doesn't lose loyalty while he's not a planeswalker.)

-3: Sarkhan, the Dragonspeaker deals 4 damage to target creature.

-6: You get an emblem with "At the beginning of your draw step, draw two additional cards" and "At the beginning of your end step, discard your hand."

Exile target creature. Put two loyalty counters on a planeswalker you control.

Simic Guildgate enters the battlefield tapped.

{T}: Add {G} or {U}.

Flying, first strike, vigilance, lifelink, protection from red and from green

Stirring Wildwood enters the battlefield tapped.

{T}: Add {G} or {W}.

{1}{G}{W}: Until end of turn, Stirring Wildwood becomes a 3/4 green and white Elemental creature with reach. It's still a land.

Flying, vigilance

Players can't untap more than one creature during their untap steps.

Sulfur Falls enters the battlefield tapped unless you control an Island or a Mountain.

{T}: Add {U} or {R}.

+1: Choose up to two target creatures. Until your next turn, whenever either of those creatures deals combat damage, you draw a card.

-2: Tap up to two target nonland permanents. They don't untap during their controller's next untap step.

-7: Draw three cards. You get an emblem with "You may cast spells from your hand without paying their mana costs."

+1: Draw a card. At the beginning of the next end step, untap up to two lands.

-3: Put target nonland permanent into its owner's library third from the top.

-8: You get an emblem with "Whenever you draw a card, exile target permanent an opponent controls."

Temple of Epiphany enters the battlefield tapped.

When Temple of Epiphany enters the battlefield, scry 1.

{T}: Add {U} or {R}.

Temple of Malice enters the battlefield tapped.

When Temple of Malice enters the battlefield, scry 1.

{T}: Add {B} or {R}.

({U/P} can be paid with either {U} or 2 life.)

Draw two cards, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

First strike

Creatures and nonbasic lands your opponents control enter the battlefield tapped.

{T}: Add {C}.

{2}, {T}: Thespian's Stage becomes a copy of target land, except it has this ability.

Transguild Promenade enters the battlefield tapped.

When Transguild Promenade enters the battlefield, sacrifice it unless you pay {1}.

{T}: Add one mana of any color.

Whenever another creature enters the battlefield under your control, you gain life equal to that creature's toughness.

{1}{G}{W}, {T}: Populate. (Create a token that's a copy of a creature token you control.)

Flying

Whenever Vaevictis Asmadi, the Dire attacks, for each player, choose target permanent that player controls. Those players sacrifice those permanents. Each player who sacrificed a permanent this way reveals the top card of their library, then puts it onto the battlefield if it's a permanent card.

+1: Until your next turn, whenever a creature deals combat damage to Vraska the Unseen, destroy that creature.

-3: Destroy target nonland permanent.

-7: Create three 1/1 black Assassin creature tokens with "Whenever this creature deals combat damage to a player, that player loses the game."

Woodland Cemetery enters the battlefield tapped unless you control a Swamp or a Forest.

{T}: Add {B} or {G}.