Exile the top three cards of your library face down. You may look at those cards for as long as they remain exiled. Until your next turn, you may play those cards. At the beginning of your next upkeep, put any of those cards you didn't play into your graveyard.

Flash
Flying
When this creature enters, target creature an opponent controls gets -X/-0 until end of turn, where X is your devotion to blue.

When this creature enters, you get .
Whenever this creature attacks, you may pay . If you do, put a +1/+1 counter on it.

Flying
Whenever this creature deals combat damage to a player, proliferate.

Flash
Flying
Spells you cast with mana value 5 or greater cost less to cast and can't be countered.

Flying
Whenever you cast your second spell each turn, put a +1/+1 counter on this creature.

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

Flying
Instant and sorcery spells you cast cost less to cast.
, Sacrifice this creature: When you next cast an instant or sorcery spell this turn, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies.

Flying
: Tap all creatures with toughness 2 or less.
: All other creatures lose flying until end of turn.

Convoke
Flying

Replicate
Create a 3/3 blue Weird creature token with defender and flying. Exile it at the beginning of the next end step.

Offspring
When this creature enters, look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

When this creature enters, look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
(This token's mana cost is .)

You may return three Islands you control to their owner's hand rather than pay this spell's mana cost.
Counter target spell.

Any player may cast spells as though they had flash.
Your opponents can't cast spells during your turn.

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
You may tap or untap target creature.

Cumulative upkeep
Pay 2 life or : Counter target red or green spell. Any player may activate this ability.

When this creature enters, reveal the top four cards of your library. Put all Merfolk cards revealed this way into your hand and the rest on the bottom of your library in any order.
: This creature gains flying until end of turn.

: For each attacking creature without flying, its controller may pay . If that player doesn't, creatures you control blocking that creature gain first strike until end of turn.

At the beginning of each upkeep, you may tap or untap target permanent.

Cast this spell only if no permanents named Tidal Influence are on the battlefield.
This enchantment enters with a tide counter on it.
At the beginning of your upkeep, put a tide counter on this enchantment.
As long as there is exactly one tide counter on this enchantment, all blue creatures get -2/-0.
As long as there are exactly three tide counters on this enchantment, all blue creatures get +2/+0.
Whenever there are four or more tide counters on this enchantment, remove all tide counters from it.

This creature can't be blocked.

Tap up to three target creatures without flying.

Whenever this creature attacks, you may tap two other untapped creatures you control. If you do, this creature can't be blocked this turn.
Islandcycling

: Target creature becomes the color of your choice until end of turn.

: Target land becomes an Island until end of turn.

Create a 5/5 blue Wall creature token with defender. Sacrifice it at the beginning of the next end step.

Devoid
Other colorless creatures you control get +0/+1.

Kicker
When this creature enters, if it was kicked, target land becomes an Island for as long as this creature remains on the battlefield.
This creature gets +1/+1 as long as an opponent controls an Island.

Flying
Whenever you attack with two or more creatures with flying, draw a card.