Arcane Sanctum enters the battlefield tapped.

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

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

If four or more creatures are attacking, you may pay {1}{W} rather than pay this spell's mana cost.

Arrow Volley Trap deals 5 damage divided as you choose among any number of target attacking creatures.

Discard your hand. Search your library for three cards, put them into your hand, then shuffle.

Blazethorn Scarecrow has haste as long as you control a red creature.

Blazethorn Scarecrow has wither as long as you control a green creature. (It deals damage to creatures in the form of -1/-1 counters.)

Prevent all noncombat damage that would be dealt to you and creatures you control.

Whenever a nontoken creature enters the battlefield under your control, create a 2/2 white Unicorn creature token.

Changeling (This card is every creature type.)

As Bloodline Pretender enters the battlefield, choose a creature type.

Whenever another creature of the chosen type enters the battlefield under your control, put a +1/+1 counter on Bloodline Pretender.

Destroy target creature that isn't enchanted. It can't be regenerated.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

You may pay {W}{U}{B}{R}{G} rather than pay this spell's mana cost.

Trample

At the beginning of your upkeep, you may pay 2 life. If you do, search your library for a card, then shuffle and put that card on top.

Indestructible

{T}: Add {C}.

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

Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Chainbreaker enters the battlefield with two -1/-1 counters on it.

{3}, {T}: Remove a -1/-1 counter from target creature.

Lands you control have "{T}: Add one mana of any color."

{T}: Add one mana of any color.

As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.

Spells you cast of the chosen type cost {1} less to cast.

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

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

Sacrifice Commander's Sphere: Draw a card.

Whenever a creature becomes the target of a spell or ability, return that creature to its owner's hand. (It won't be affected by the spell or ability.)

When Crosis's Catacombs enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand.

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

When Crossroads Candleguide enters the battlefield, exile up to one target card from a graveyard.

{2}: Add one mana of any color.

Crumbling Necropolis enters the battlefield tapped.

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

{T}: Add {C}.

{5}, {T}: Add {W}{U}{B}{R}{G}.

Return up to X target artifact and/or non-Aura enchantment cards each with mana value X or less from your graveyard to the battlefield. If X is 6 or more, those permanents are 4/4 creatures in addition to their other types.

Each player who controls a multicolored creature draws a card. Then destroy all creatures.

{T}: Add {C}.

{1}, {T}: Until end of turn, your opponents and creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.

Search your library for a card, put that card into your hand, then shuffle.

When Dromar's Cavern enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand.

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

Untap any number of target creatures. Prevent all combat damage that would be dealt to and dealt by those creatures this turn.

Artifact spells you cast cost {1} less to cast.

{T}: Add one mana of any color that a land an opponent controls could produce.

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

{2}: Target black creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)

Farmstead Gleaner doesn't untap during your untap step.

{2}, {Q}: Put a +1/+1 counter on Farmstead Gleaner. ({Q} is the untap symbol.)

{T}: Add one mana of any color that a land an opponent controls could produce.

{T}: Add {C}.

{T}: Choose target commander that entered the battlefield this turn. Put a +1/+1 counter on it if it's a creature and a loyalty counter on it if it's a planeswalker.

Artifact spells you cast cost {1} less to cast.

Frontier Bivouac enters the battlefield tapped.

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

Creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.

{3}, Sacrifice Glaring Spotlight: Creatures you control gain hexproof until end of turn and can't be blocked this turn.

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

Haunted Mire enters the battlefield tapped.

Sacrifice Heap Doll: Exile target card from a graveyard.

Spells cost {1} less to cast.

As Herald's Horn enters the battlefield, choose a creature type.

Creature spells you cast of the chosen type cost {1} less to cast.

At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.

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

Idyllic Beachfront enters the battlefield tapped.

Casualty 3 (As you cast this spell, you may sacrifice a creature with power 3 or greater. When you do, copy this spell.)

Search your library for a card, put it into your hand, then shuffle.

({T}: Add {U}.)

({T}: Add {U}.)

{2}: Target red creature gains haste until end of turn.

Flying

Historic spells you cast cost {1} less to cast. (Artifacts, legendaries, and Sagas are historic.)

{3}: Jousting Dummy gets +1/+0 until end of turn.

Jungle Shrine enters the battlefield tapped.

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

Blue creature spells you cast cost {1} less to cast.

Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

Krosan Verge enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

Artifacts you control have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Flying

Whenever an artifact enters the battlefield under your control, you may tap target permanent.

Each noncreature artifact is an artifact creature with power and toughness each equal to its mana value. (Equipment that's a creature can't equip a creature.)

Devoid (This card has no color.)

Whenever you cast a colorless spell, Molten Nursery deals 1 damage to any target.

Divine Intervention -- When Moon-Blessed Cleric enters the battlefield, you may search your library for an enchantment card, reveal it, then shuffle and put that card on top.

({T}: Add {R}.)

Mystic Monastery enters the battlefield tapped.

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

Whenever a source you control deals damage to another player, put that many theft counters on Night Dealings.

{2}{B}{B}, Remove X theft counters from Night Dealings: Search your library for a nonland card with mana value X, reveal it, put it into your hand, then shuffle.

Nomad Outpost enters the battlefield tapped.

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

Indestructible

As long as your devotion to green is less than five, Nylea isn't a creature.

Creature spells you cast cost {1} less to cast.

{2}{G}: Reveal the top card of your library. If it's a creature card, put it into your hand. Otherwise, you may put it into your graveyard.

Destroy all nonland permanents.

Ondu Skyruins enters the battlefield tapped.

{T}: Add {W}.

Whenever you cast a creature spell, tap target creature.

Opulent Palace enters the battlefield tapped.

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

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

Destroy all nonartifact creatures.

As Outpost Siege enters the battlefield, choose Khans or Dragons.

• Khans -- At the beginning of your upkeep, exile the top card of your library. Until end of turn, you may play that card.

• Dragons -- Whenever a creature you control leaves the battlefield, Outpost Siege deals 1 damage to any target.

Whenever a creature enters the battlefield, that creature's controller may have it deal damage equal to its power to any target of their choice.

If an artifact or creature entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Path of Ancestry enters the battlefield tapped.

{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

For each player, choose friend or foe. Each friend searches their library for a land card, puts it onto the battlefield tapped, then shuffles. Each foe sacrifices an artifact or enchantment they control.

({T}: Add {W}.)

({T}: Add {W}.)

Search your library for up to two enchantment cards, reveal them, put them into your hand, then shuffle.

Power Depot enters the battlefield tapped.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast artifact spells or activate abilities of artifacts.

Modular 1

({G/W} can be paid with either {G} or {W}.)

Other permanents you control have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Put target face-up exiled card into its owner's graveyard.

({2/W} can be paid with any two mana or with {W}. This card's mana value is 10.)

Other Scarecrow creatures you control get +1/+1.

Whenever another Scarecrow enters the battlefield under your control, destroy target permanent.

Whenever an artifact enters the battlefield under your control, Reckless Fireweaver deals 1 damage to each opponent.

Return target artifact, enchantment, or planeswalker card from your graveyard to the battlefield. Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Suspend 2--{1}{W} (Rather than cast this card from your hand, pay {1}{W} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)

Return all enchantment cards from your graveyard to the battlefield. (Auras with nothing to enchant remain in your graveyard.)

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

Sacred Peaks enters the battlefield tapped.

Sandsteppe Citadel enters the battlefield tapped.

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

Savage Lands enters the battlefield tapped.

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

{1}, Sacrifice a Scarecrow: Draw a card.

{4}, {T}: Return target artifact creature card from your graveyard to the battlefield.

{T}: Add one mana of any color.

{T}: Target creature becomes the color or colors of your choice until end of turn.

Seaside Citadel enters the battlefield tapped.

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

Each player who controls a creature with power 4 or greater draws a card. Then destroy all creatures.

{T}: Add {C}.

{T}: Add {C}{C}. Spend this mana only to cast colorless spells. Activate only if you control seven or more lands.

Flying

Whenever Silent Sentinel attacks, you may return target enchantment card from your graveyard to the battlefield.

{T}: Add {C}{C}.

Flying

Artifact and enchantment spells you cast cost {1} less to cast.

As Stenn, Paranoid Partisan enters the battlefield, choose a card type other than creature or land.

Spells you cast of the chosen type cost {1} less to cast.

{1}{W}{U}: Exile Stenn. Return it to the battlefield under its owner's control at the beginning of the next end step.

Other enchantments you control have shroud. (They can't be the targets of spells or abilities.)

{1}, Sacrifice Sterling Grove: Search your library for an enchantment card, reveal it, then shuffle and put that card on top.

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

Sunlit Marsh enters the battlefield tapped.

({T}: Add {B}.)

({T}: Add {B}.)

Any number of target creatures become the color of your choice until end of turn.

Draw a card.

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

Tangled Islet enters the battlefield tapped.

{T}: Add {C}{C}. Activate only if you control five or more lands.

The World Tree enters the battlefield tapped.

{T}: Add {G}.

As long as you control six or more lands, lands you control have "{T}: Add one mana of any color."

{W}{W}{U}{U}{B}{B}{R}{R}{G}{G}, {T}, Sacrifice The World Tree: Search your library for any number of God cards, put them onto the battlefield, then shuffle.

Whenever an artifact enters the battlefield under your control, target creature gains flying until end of turn.

Each noncreature artifact loses all abilities and becomes an artifact creature with power and toughness each equal to its mana value. If Titania's Song leaves the battlefield, this effect continues until end of turn.

When Trinket Mage enters the battlefield, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.

Colorless spells you cast cost {2} less to cast.

+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.

-3: Destroy target permanent that's one or more colors.

Changeling (This card is every creature type.)

Whenever Veil of Assimilation or another artifact enters the battlefield under your control, target creature you control gets +1/+1 and gains vigilance until end of turn.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Other creatures you control have intimidate.

Whenever Vela the Night-Clad or another creature you control leaves the battlefield, each opponent loses 1 life.

Whenever a creature enters the battlefield under your control, it deals damage equal to its power to any target.

Watchwing Scarecrow has vigilance as long as you control a white creature.

Watchwing Scarecrow has flying as long as you control a blue creature.

Defender

{2}, Sacrifice Wild-Field Scarecrow: Search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle.

Wingrattle Scarecrow has flying as long as you control a blue creature.

Wingrattle Scarecrow has persist as long as you control a black creature. (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

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

Wooded Ridgeline enters the battlefield tapped.