Flying
Metalcraft — Whenever this creature deals combat damage to a player, if you control three or more artifacts, that player mills four cards.

When this creature enters, mill two cards.

All Slivers have ": Target player mills a card."

, , Sacrifice this creature: Return target instant or sorcery card from your graveyard to your hand.

When this creature enters, you may return target instant card from your graveyard to your hand.

Whenever this creature deals combat damage to a player, draw a card.

Flying
Whenever you discard one or more cards, put that many +1/+1 counters on this creature.
Cycling

Sliver creatures you control have ": Untap this creature."

Flying
When this creature enters, return two target lands you control to their owner's hand.

: Draw a card for each Ally you control.

When this creature enters, look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Kicker
When this creature enters, copy the next instant or sorcery spell with mana value 2 or less you cast this turn when you cast it. If this creature was kicked, copy that spell twice instead. You may choose new targets for the copies.

When this creature enters, creatures your opponents control get -4/-0 until end of turn.

This creature can't attack unless defending player controls an Island.

: Add .
, : Add .

This creature can't attack unless defending player controls an Island.
When you control no Islands, sacrifice this creature.

: Target land becomes the basic land type of your choice until end of turn.

: This creature gets +1/+0 until end of turn.

Flying, protection from red

: Regenerate this creature. Activate only if this creature blocked or was blocked by a blue creature this turn.

Mutate
Flash
Whenever this creature deals combat damage to a player, draw a card.

Whenever a Merfolk you control deals combat damage to a player, draw a card.

: This creature gets +1/+0 until end of turn and can't be blocked this turn. This ability costs less to activate for each creature in your party. (Your party consists of up to one of each Cleric, Rogue, Warrior, and Wizard.)

, : Search your library for a Merfolk permanent card, put it onto the battlefield, then shuffle.

This creature can't attack unless defending player controls an Island.
: Monstrosity 3.
When this creature becomes monstrous, target land becomes an Island in addition to its other types.

Whenever you search your library, scry 1.
Scryfall — Whenever you scry, put a +1/+1 counter on Search Elemental. It can't be blocked this turn.

Whenever this creature or another Ally you control enters, you may have Ally creatures you control gain flying until end of turn.