Shadow
Discard a card: Return this creature to its owner's hand.

Shadow
When this creature leaves the battlefield, draw a card.

When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game.

Double team
When Thayan Evokers enters, conjure a card named Lightning Bolt into your hand, then discard a card.
Whenever you conjure one or more cards, put a +1/+1 counter on Thayan Evokers.

You may cast the first creature spell you cast each turn as though it had flash.
Whenever a nontoken creature you control enters during combat, draw a card.

The Destined Thief can't be blocked.
, : Another target creature you control can't be blocked this turn.
Whenever one or more creatures you control deal combat damage to one or more players, draw a card, then discard a card. If you have a full party, instead draw three cards.

Islandwalk
Water Always Wins — Whenever this creature attacks, put a flood counter on another target creature or land. If it's a creature, it becomes a copy of this creature. If it's a land, it becomes an Island in addition to its other types.

Flash
This spell costs less to cast, where X is the total power of creatures you control with flying.
Flying

Whenever you cast a noncreature spell, create a Clue token.
: Until end of turn, target artifact token you control becomes a 3/1 Construct artifact creature with flying.

Flash
Ward — Waterbend .
Whenever an opponent draws their second card each turn, you draw two cards.

Flying, trample
Whenever The Unspeakable deals combat damage to a player, you may return target Arcane card from your graveyard to your hand.

Flash
Flying
When The Wasp enters, target Hero gains hexproof until end of turn.
Whenever The Wasp attacks, tap target creature defending player controls.

The Watcher in the Water enters tapped with nine stun counters on it.
Whenever you draw a card during an opponent's turn, create a 1/1 blue Tentacle creature token.
Whenever a Tentacle you control dies, untap up to one target Kraken and put a stun counter on up to one target nonland permanent.

Flash
Flying
Wasp's Sting — When The Wondrous Wasp enters, tap up to one target creature. It loses all abilities for as long as The Wondrous Wasp remains on the battlefield.

Flash
When this creature enters, empower Jace 3.
, Sacrifice this creature: The next spell you cast this turn can't be countered.

As There's No Folk Like Merfolk enters, choose a word with four or more letters.
At the beginning of your upkeep, name a movie whose title contains the chosen word. You can't name a movie twice. If you don't, sacrifice There's No Folk Like Merfolk.

Flying
Whenever Thieving Aven deals combat damage to a player, heist target opponent's library.
Whenever you cast a spell you don't own, put a +1/+1 counter on Thieving Aven.

Flying
Whenever this creature deals damage to an opponent, draw a card.

Whenever this creature deals damage to an opponent, draw a card.

Kicker . X can't be 0.
Flying
When this creature enters, if it was kicked, gain control of target artifact with mana value X or less. If that artifact is an Equipment, attach it to this creature.

Whenever this creature attacks, sacrifice it unless you sacrifice an Island.

Defender
This creature enters with four ice counters on it.
Whenever you cast an instant or sorcery spell, remove an ice counter from this creature. Then if it has no ice counters on it, transform it.

: Draw two cards.

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.
When this creature dies, create a 1/1 colorless Thopter artifact creature token with flying.

Flying
: This creature deals 1 damage to any target.

: Draw a card, then discard a card.

Flying
Your maximum hand size is reduced by four.

Flying
Your maximum hand size is reduced by three.