Whenever an enchantment enters the battlefield under your control, create a 2/2 white Cat creature token. If that enchantment is an Aura, you may attach it to the token.

Alirios, Enraptured enters the battlefield tapped.

Alirios doesn't untap during your untap step if you control a Reflection.

When Alirios enters the battlefield, create a 3/2 blue Reflection creature token.

When Ancestral Blade enters, create a 1/1 white Soldier creature token, then attach Ancestral Blade to it.

Equipped creature gets +1/+1.

Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

When Aquatic Incursion enters the battlefield, create two 1/1 blue Merfolk creature tokens with hexproof. (They can't be the targets of spells or abilities your opponents control.)

{3}{U}: Target Merfolk can't be blocked this turn.

Flying, lifelink

Pegasus creatures you control have lifelink.

Constellation -- Whenever an enchantment enters the battlefield under your control, create a 2/2 white Pegasus creature token with flying.

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}.

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

When Blade Splicer enters, create a 3/3 colorless Phyrexian Golem artifact creature token.

Golems you control have first strike.

Vigilance (Attacking doesn't cause this creature to tap.)

Other Soldier creatures you control get +1/+1 and have vigilance.

When Captain of the Watch enters the battlefield, create three 1/1 white Soldier creature tokens.

Exile target creature you control, then return that card to the battlefield under your control.

When Dance of Many enters the battlefield, create a token that's a copy of target nontoken creature.

When Dance of Many leaves the battlefield, exile the token.

When the token leaves the battlefield, sacrifice Dance of Many.

At the beginning of your upkeep, sacrifice Dance of Many unless you pay {U}{U}.

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.

When Dovin's Acuity enters the battlefield, you gain 2 life and draw a card.

Whenever you cast an instant spell during your main phase, you may return Dovin's Acuity to its owner's hand.

Each player can't cast more than one spell each turn.

Devoid (This card has no color.)

Flying

When Eldrazi Skyspawner enters, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."

Exile target creature you control, then return it to the battlefield under its owner's control.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Exile target creature you control, then return that card to the battlefield under its owner's control. If it's a Spirit, put a +1/+1 counter on it.

When Evangel of Heliod enters, create a number of 1/1 white Soldier creature tokens equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.)

Flying

When Faerie Seer enters, scry 2.

As an additional cost to cast this spell, return a creature you control to its owner's hand.

Counter target spell.

When Fblthp, the Lost enters the battlefield, draw a card. If it entered from your library or was cast from your library, draw two cards instead.

When Fblthp becomes the target of a spell, shuffle Fblthp into its owner's library.

When Felidar Guardian enters the battlefield, you may exile another target permanent you control, then return that card to the battlefield under its owner's control.

Exile target nontoken permanent, then return it to the battlefield under its owner's control.

Flying

When Flickerwisp enters, exile another target permanent. Return that card to the battlefield under its owner's control at the beginning of the next end step.

When Forbidding Spirit enters the battlefield, until your next turn, creatures can't attack you or planeswalkers you control unless their controller pays {2} for each of those creatures.

Destroy all creatures. You gain 1 life for each creature destroyed this way.

Whenever a nontoken creature enters the battlefield, if Genesis Chamber is untapped, that creature's controller creates a 1/1 colorless Myr artifact creature token.

Exile two target artifacts, creatures, and/or lands you control, then return those cards to the battlefield under your control.

When Golden Egg enters the battlefield, draw a card.

{1}, {T}, Sacrifice Golden Egg: Add one mana of any color.

{2}, {T}, Sacrifice Golden Egg: You gain 3 life.

You may cast Harbinger of the Tides as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.)

When Harbinger of the Tides enters the battlefield, you may return target tapped creature an opponent controls to its owner's hand.

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

{2}, {T}, Sacrifice Hedron Archive: Draw two cards.

As Heraldic Banner enters, choose a color.

Creatures you control of the chosen color get +1/+0.

{T}: Add one mana of the chosen color.

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

As Illusionary Terrain enters the battlefield, choose two basic land types.

Basic lands of the first chosen type are the second chosen type.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}."

When Kor Cartographer enters, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls.

Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.

When Lena, Selfless Champion enters the battlefield, create a 1/1 white Soldier creature token for each nontoken creature you control.

Sacrifice Lena: Creatures you control with power less than Lena's power gain indestructible until end of turn.

Whenever Mardu Woe-Reaper or another Warrior enters the battlefield under your control, you may exile target creature card from a graveyard. If you do, you gain 1 life.

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

• Khans -- At the beginning of your draw step, draw an additional card, then discard a card.

• Dragons -- Spells your opponents cast that target you or a permanent you control cost {2} more to cast.

{3}, {T}: Create a token that's a copy of Myr Propagator.

Counter target noncreature spell.

{2}, {T}: Create a 0/1 colorless Pest artifact creature token.

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 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.

Flash

When Omen of the Sea enters, scry 2, then draw a card.

{2}{U}, Sacrifice Omen of the Sea: Scry 2.

Flash

When Omen of the Sun enters, create two 1/1 white Human Soldier creature tokens and you gain 2 life.

{2}{W}, Sacrifice Omen of the Sun: Scry 2.

When Overwhelmed Apprentice enters the battlefield, each opponent mills two cards. Then you scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

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

Fading 5 (This enchantment enters the battlefield with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)

Remove a fade counter from Parallax Tide: Exile target land.

When Parallax Tide leaves the battlefield, each player returns to the battlefield all cards they own exiled with Parallax Tide.

Flying

When Peregrine Drake enters, untap up to five lands.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

When Prosperous Pirates enters the battlefield, create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

When Reverent Hoplite enters, create a number of 1/1 white Human Soldier creature tokens equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.)

When Sage of Epityr enters the battlefield, look at the top four cards of your library, then put them back in any order.

When Sailor of Means enters the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Counter target spell that's the second spell cast this turn.

Flash

When Sentinel of the Pearl Trident enters the battlefield, you may exile target historic permanent you control. If you do, return that card to the battlefield under its owner's control at the beginning of the next end step. (Artifacts, legendaries, and Sagas are historic.)

Red

Whenever another creature enters the battlefield, you gain 1 life.

{T}: Choose a player. That player adds one mana of any color they choose.

Sphere of the Suns enters the battlefield tapped and with three charge counters on it.

{T}, Remove a charge counter from Sphere of the Suns: Add one mana of any color.

Exile target permanent you control. Return that card to the battlefield under its owner's control at the beginning of the next end step. If it enters the battlefield as a creature, it enters with an additional +1/+1 counter on it.

Creatures you control with power or toughness 1 or less can't be blocked.

When Thraben Inspector enters the battlefield, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Transmogrifying Wand enters the battlefield with three charge counters on it.

{1}, {T}, Remove a charge counter from Transmogrifying Wand: Destroy target creature. Its controller creates a 2/4 white Ox creature token. Activate only as a sorcery.

When Whirler Rogue enters, create two 1/1 colorless Thopter artifact creature tokens with flying.

Tap two untapped artifacts you control: Target creature can't be blocked this turn.

Flying

When Wispweaver Angel enters, you may exile another target creature you control, then return that card to the battlefield under its owner's control.

Companion -- Your starting deck contains at least twenty cards more than the minimum deck size. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.)

Flying

When Yorion enters, exile any number of other nonland permanents you own and control. Return those cards to the battlefield at the beginning of the next end step.