Sneak
Target opponent mills half their library, rounded up.

Flying
, : Target opponent exiles the top card of their library. Until end of turn, you may play that card. ( is the untap symbol.)

Flanking
When this creature enters, you may pay . If you don't, destroy target Knight and it can't be regenerated.

Flying
Whenever another nontoken Bird you control enters, create a 1/1 blue Fish creature token.

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.

Prowl
Search target opponent's library for an instant or sorcery card. You may cast that card without paying its mana cost. Then that player shuffles.

Vigilance
Whenever you draw your second card each turn, put a +1/+1 counter on this creature.
When this creature dies, create a Clue token.

At the beginning of your upkeep, choose one that hasn't been chosen —
• Hail — Return up to one target creature an opponent controls with mana value 3 or less to its owner's hand.
• Sensors — Draw two cards.
• Transport — Create two 1/1 red Officer creature tokens.
• Abandon Ship — You lose the game.

Flash
Flying
When this creature enters, create a tapped Powerstone token.

Spells your opponents cast that target a Merfolk you control cost more to cast.
Abilities your opponents activate that target a Merfolk you control cost more to activate.

Devoid
Whenever you cast a creature spell with mana value 4, 5, or 6, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this token: Add ."
Whenever you cast a creature spell with mana value 7 or greater, draw three cards.

Creatures with power less than the number of Islands you control can't block this creature.

Affinity for artifacts
When Krang enters, if you have fewer than four cards in hand, draw cards equal to the difference.
Krang gets +1/+0 for each other artifact you control.

If a player drawing a card causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Whenever a player draws their second card each turn, put a +1/+1 counter on Krang.

, Discard a nonblack card: Draw a card.
, Discard a black card: Draw two cards, then discard one of them.

Enchant creature
Cumulative upkeep or
You control enchanted creature.
When this Aura is put into a graveyard from the battlefield, you lose 2 life for each age counter on it.

Whenever this creature attacks and isn't blocked, you may gain control of target artifact defending player controls. If you do, this creature assigns no combat damage this turn.

This creature can't attack unless defending player controls an Island.
, Sacrifice an Island: Target land an opponent controls becomes an Island until end of turn.
When you control no Islands, sacrifice this creature.

Whenever you cast a spell with mana value 4 or greater, this creature gets +2/+0 and gains vigilance until end of turn.

Ascend
At the beginning of your upkeep, each player draws a card. If you have the city's blessing, instead only you draw a card.

Vigilance
: Add . Spend this mana only to cast an artifact spell.

: For each permanent you control that you've put a counter on this turn, create a 1/1 blue Faerie creature token with flying.

When this creature enters, mill four cards.