If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

Vigilance If a permanent entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time. Permanents entering don't cause abilities of permanents your opponents control to trigger.

Creatures you control have myriad. (Whenever a creature with myriad attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

If one or more tokens would be created under your control, twice that many of those tokens are created instead. {1}{W/P}{W/P}, Sacrifice two other artifacts and/or creatures: Put an indestructible counter on Mondrak. ({W/P} can be paid with either {W} or 2 life.)

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

Flying, double strike Whenever a creature you control deals combat damage to a player, you and that player each gain that much life. At the beginning of your end step, if you have at least 15 life more than your starting life total, each player this creature attacked this turn loses the game.

Flying Lifelink (Damage dealt by this creature also causes you to gain that much life.) Pegasus creatures you control have lifelink. Constellation — Whenever an enchantment you control enters, create a 2/2 white Pegasus creature token with flying.

Flying, myriad Whenever this creature deals combat damage to a player, draw a card if that player has more cards in hand than each other player. Then you create a Treasure token if that player controls more lands than each other player. Then you gain 3 life if that player has more life than each other player.

Trample, infect, indestructible If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.

Flying Whenever this creature deals combat damage to a player, that player exiles cards from the top of their library until they exile an instant or sorcery card. You may cast that card without paying its mana cost. Then that player puts the exiled cards that weren't cast this way on the bottom of their library in a random order.

Impending 4—{1}{U}{U} (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.) Flying Whenever this permanent enters or attacks, draw two cards, then discard a card.

Impending 4—{2}{W}{W} (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.) Whenever this permanent enters or attacks, create two 2/1 white Insect creature tokens with flying.

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.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.) Exile target nontoken creature. If the gift wasn't promised, return that card to the battlefield under its owner's control with a +1/+1 counter on it at the beginning of the next end step.

Flash Flying When this creature enters, you may exile target non-Angel creature you control, then return that card to the battlefield under your control.

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.) You and permanents you control gain hexproof until end of turn. If the gift was promised, permanents you control also gain indestructible until end of turn.

Exile any number of target creatures you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.

Avoidance — Whenever you cast a noncreature spell, exile up to one target nonland permanent you control, then return that card to the battlefield under its owner's control.

Flying At the beginning of combat on your turn, populate. (Create a token that's a copy of a creature token you control.) Whenever a creature token you control enters, put a +1/+1 counter on this creature.

When Niko Aris enters, create X Shard tokens. (They're enchantments with "{2}, Sacrifice this token: Scry 1, then draw a card.") +1: Up to one target creature you control can't be blocked this turn. Whenever that creature deals damage this turn, return it to its owner's hand. −1: Niko Aris deals 2 damage to target tapped creature for each card you've drawn this turn. −1: Create a Shard token.

Whenever a creature is exiled from the battlefield, put a +1/+1 counter on this creature. At the beginning of your end step, you may exile another target creature you control, then return that card to the battlefield under its owner's control.

At the beginning of your end step, exile up to one target artifact or creature you control, then return that card to the battlefield under its owner's control.

Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. At the beginning of your end step, exile up to one other target creature you control, then return that card to the battlefield under your control. {3}{U}: Tap another target creature.

Flying Whenever this creature deals combat damage to a player, roll a d20. Draw cards equal to the result. You have no maximum hand size for the rest of the game.

Flying You have no maximum hand size. Whenever a creature token you control deals combat damage to a player, draw a card.

Whenever one or more other creatures you control leave the battlefield without dying, draw a card. {1}{U}, {T}: Return another target creature you control to its owner's hand.

Flying, lifelink Whenever you draw a card, this creature gets +1/+0 until end of turn. Whenever this creature attacks, draw a card. Discard a card: This creature gains hexproof until end of turn. Tap it.

Flash Whenever a creature you control deals combat damage to a player, draw a card. When Enduring Curiosity dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.)

Flash Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, draw a card.

Flying When this creature enters, draw two cards. Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Cumulative upkeep {1} (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.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

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

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

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

{T}: Add {C}. {T}: Add {W} or {U}. This artifact deals 1 damage to you.

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

Counter target spell.

This spell can't be countered. Counter target noncreature spell.

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn.) Flying Whenever this creature attacks, return target nonland permanent card with mana value X or less from your graveyard to the battlefield, where X is this creature's power.

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

This land enters tapped unless you control two or more other lands. {T}: Add {W} or {U}.

{T}: Add {W}. Channel — {2}{W}, Discard this card: It deals 4 damage to target attacking or blocking creature. This ability costs {1} less to activate for each legendary creature you control.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

{T}: Add {W}. {T}: Add {U}. Activate only if you control a Plains or an Island.

This land enters tapped unless you control a Plains or an Island. {T}: Add {W} or {U}.

({T}: Add {W} or {U}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {U}.)

({T}: Add {W} or {U}.) This land enters tapped. When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

{T}: Add {U}. {U}, {T}: Untap target legendary permanent.

{T}: Add {C}. {W/U}, {T}: Add {W}{W}, {W}{U}, or {U}{U}.

({T}: Add {U}.) This land enters tapped unless you control three or more other Islands. When this land enters untapped, you may put target instant or sorcery card from your graveyard on top of your library.

{T}: Add {C}. {T}: Add {W}. Activate only if you control an Island. {T}: Add {U}. Activate only if you control a Plains.

{T}: Add {U}. Channel — {3}{U}, Discard this card: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

({T}: Add {W}.)

You have no maximum hand size. {T}: Add {C}.

This land enters tapped unless you have two or more opponents. {T}: Add {W} or {U}.

Flying Whenever this creature enters or deals combat damage to a player, exile up to one target nonland permanent. For as long as that card remains exiled, its owner may cast it. Whenever another player casts a spell from anywhere other than their hand, draw a card.

Flying When this creature enters, exile up to two target artifacts and/or enchantments. Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)

Choose one or more — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all graveyards.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)

Whenever this creature enters or attacks, put a slime counter on up to one other target creature. Non-Horror creatures with slime counters on them lose all abilities and have base power and toughness 2/2.

Flash Lifelink When this creature enters, exile up to one other target creature. That creature's controller gains life equal to its power. Evoke—Exile a white card from your hand.

Destroy target nonland permanent. Its controller creates a 1/1 white Human creature token.

Exile target creature. Its controller gains life equal to its power.

Return a creature you control to its owner's hand, then destroy all creatures.

This spell costs {1} less to cast for each creature on the battlefield. Destroy all creatures.