{T}: Add {C}{C}. This land deals 2 damage to you.

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

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

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

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

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

({T}: Add {W}.)

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

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

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

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

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

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

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

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

At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary. That token gains haste. Equip {5}

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

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

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

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

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

Flying Whenever this creature deals combat damage to a player, roll a d20. You create a number of 1/1 blue Faerie Dragon creature tokens with flying equal to the result.

When this creature enters, return target instant or sorcery card from your graveyard to your hand.

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.

You may have this creature enter as a copy of any creature on the battlefield, except it isn't legendary, is an artifact in addition to its other types, and has myriad. (Whenever it 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.)

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.

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.

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.

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.

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is this creature's power.

Flying Eerie — Whenever this creature or another enchantment you control enters and whenever you fully unlock a Room, tap up to one target creature and put a stun counter on it. Stun counters can't be removed from permanents your opponents control. (They won't untap if they have stun counters.)

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

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.) Whenever this creature attacks, create two 1/1 white Soldier creature tokens that are tapped and attacking.

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.)

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.

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.

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.

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

You may have this creature enter as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary.

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

Commander creatures you own have "When this creature enters or leaves the battlefield, draw a card."

Commander creatures you own have "At the beginning of your end step, exile up to one target tapped creature you control, then return it to the battlefield under its owner's control."

At the beginning of your upkeep, if an opponent controls more lands than you, you may search your library for up to three basic land cards, reveal them, put them into your hand, then shuffle.

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.)

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}.

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

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.

Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

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

Return target nonland permanent you don't control to its owner's hand. Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

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

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.

If you control a commander, you may cast this spell without paying its mana cost. Counter target noncreature spell.

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

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

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

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

Exile target creature you control, then return it to the battlefield under its owner's control. Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Counter target noncreature spell. Your opponents can't cast noncreature spells this turn.

Destroy target creature. It can't be regenerated. Its controller creates a 3/3 green Ape creature token.

Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.

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.)

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

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

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