This land enters tapped. When this land enters, look at the top three cards of your library, then put them back in any order. {T}: Add {U}.

({T}: Add {U}.)

This land enters tapped. {T}: Add {U}. Cycling {U} ({U}, Discard this card: Draw a card.)

This land enters tapped. {T}: Add {C}. {2}{C}, {T}, Sacrifice this land: Copy target instant or sorcery spell you control. You may choose new targets for the copy. {4}{C}, {T}, Sacrifice this land: Create a token that's a copy of target creature you control.

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

{T}: Add {C}. {2}, {T}: You may put a basic land card from your hand onto the battlefield tapped.

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

Sacrifice a creature: Add {C}{C}.

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

The "legend rule" doesn't apply to permanents you control. Each legendary creature you control gets +1/+1. Each nontoken creature you control gets +1/+1 for each other creature you control with the same name as that creature.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) As this artifact enters, choose a creature type. Creatures you control of the chosen type get +2/+2.

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

{2}{U}, {T}: Put target creature on the bottom of its owner's library. That creature's controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield and the rest on the bottom of their library in any order. Activate only as a sorcery.

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

For each creature target player controls, create a token that's a copy of that creature.

Choose a creature type. Draw a card for each permanent you control of that type.

Exile all creatures you control, then reveal cards from the top of your library until you reveal that many creature cards. Put all creature cards revealed this way onto the battlefield, then shuffle the rest of the revealed cards into your library.

Exile target creature you control, then return it to the battlefield under its owner's control. If that creature is a Bird, Frog, Otter, or Rat, draw a card.

Creatures you control have flying. Creatures your opponents control lose flying and can't have or gain flying.

When Barrin enters, return up to one other target creature or planeswalker to its owner's hand. At the beginning of your end step, if a permanent was put into your hand from the battlefield this turn, draw a card.

You may have this creature enter as a copy of any nonland permanent on the battlefield.

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

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.) As long as Deadeye Navigator is paired with another creature, each of those creatures has "{1}{U}: Exile this creature, then return it 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.

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 When this creature enters, sacrifice it unless you return another creature you control to its owner's hand.

You may have this creature enter as a copy of any creature on the battlefield, except it has "{X}: This creature has base power and toughness X/X."

When this creature enters, return target creature to its owner's hand.

Flying Whenever Meneldor deals combat damage to a player, exile up to one target creature you own, then return it to the battlefield under your control.

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.)

Flying When this creature enters, untap up to five lands.

You may have this creature enter as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it has "When this creature becomes the target of a spell or ability, sacrifice it."

Flash Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) You may have this creature enter as a copy of any permanent that entered this turn.

When this creature enters, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.

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.

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.

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Whenever this creature enters or attacks, you may draw a card for each other creature you control that shares a creature type with it. If you do, discard a card.

You may have this creature enter as a copy of any creature on the battlefield, except if this creature was embalmed, the token has no mana cost, it's white, and it's a Zombie in addition to its other types. Embalm {3}{U}{U}

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

When this enchantment enters, exile all creatures you control. Then create that many 5/5 red Dragon creature tokens with flying. When this enchantment leaves the battlefield, sacrifice all Dragons you control. Then return the exiled cards to the battlefield under your control.

Enchant creature you control At the beginning of your upkeep, create a token that's a copy of enchanted creature, except the token is 1/1. When enchanted creature dies, if that creature was a Horror, return this card to its owner's hand.

Enchant creature When this Aura enters attached to a creature, each other nontoken creature you control becomes a copy of that creature. Nontoken creatures you control enter as a copy of enchanted creature.

Enchant creature As this Aura enters, choose a creature. Enchanted creature is a copy of the chosen creature.

You may have this enchantment enter as a copy of any artifact or enchantment on the battlefield.

Sacrifice this enchantment: Return target creature to its owner's hand.

Whenever you cast a spell that targets only a single artifact or creature you control, create a token that's a copy of that artifact or creature, except it's not legendary.

Exile target creature you control, then return that card to the battlefield under its owner's control. Draw a card.

Draw three cards, then put two cards from your hand on top of your library in any order.

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

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.

Draw two cards, then discard two cards. Untap up to three lands.

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

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

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

Choose target nonlegendary creature. The next time one or more creatures or planeswalkers enter this turn, they enter as copies of the chosen creature. Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Counter target noncreature spell.

Return target creature you control and target creature you don't control to their owners' hands.

Choose one — • Return all creature tokens to their owners' hands. • Return all nontoken creatures to their owners' hands.

Exile target artifact or creature, then return it to the battlefield under its owner's control with a +1/+1 counter on it.

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.)

Exile target creature you control, then return that card to the battlefield under its owner's control. If a Pirate was exiled this way, draw a card.

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 as a creature, it enters with an additional +1/+1 counter on it.