Flying
Spells you cast from anywhere other than your hand cost less to cast.
Foretell

Whenever this creature or another non-Human creature you control enters, you may draw a card. If you do, discard a card.

: Add . Spend this mana only to cast a colorless spell or to activate an ability.

Flying
When this creature enters, look at the top four cards of your library, then put them back in any order.

Prowess
Whenever this creature attacks, you may return target creature to its owner's hand if its power is less than this creature's power.

Whenever another blue creature you control enters, target player mills two cards.

When this creature enters, scry 2.

Whenever you cast a noncreature spell, if at least four mana was spent to cast it, put a +1/+1 counter on this creature and it can't be blocked this turn.

Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.
, Sacrifice two artifacts: Draw a card.

Flash
Backup 1
Hexproof

Flash
This spell costs less to cast if there are no instant or sorcery cards in your hand.
When Saiba Syphoner enters, return target instant or sorcery card from your graveyard to your hand.
If Saiba Syphoner would die, shuffle it into your library instead.

: Target creature gains flying until end of turn. Any player may activate this ability.

When this creature enters, create a Treasure token.

This spell costs less to cast for each card you own in exile and in your graveyard that's an instant card, a sorcery card, or a card that has an Adventure.
Ward

You may have Sakashima enter as a copy of another creature you control, except it has Sakashima's other abilities.
The "legend rule" doesn't apply to permanents you control.
Partner

You may have Sakashima the Impostor enter as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has ": Return Sakashima the Impostor to its owner's hand at the beginning of the next end step."

Flash
Cascade
You may have this creature enter as a copy of any permanent that entered this turn.

Ninjutsu
You may have this creature enter as a copy of any creature on the battlefield, except it's a Ninja in addition to its other creature types.

This spell costs less to cast, where X is your devotion to blue.
Trample
Whenever you cast an artifact or creature spell, copy it, except the copy is a 1/1 Fish creature in addition to its other types. (The copy becomes a token.)

Whenever this creature deals damage to an opponent, target player draws a card.

Devoid
Ingest
When this creature dies, you may draw a card. If you do, discard a card.

Whenever this creature attacks, return an artifact you control to its owner's hand.

When this creature enters, return target instant or sorcery card from your graveyard to your hand.

Whenever an opponent casts a creature spell, investigate.

Instant and sorcery spells you control have split second.

Islandwalk
You may choose not to untap this creature during your untap step.
: Tap target creature. That creature doesn't untap during its controller's untap step for as long as this creature remains tapped.

Flying
Whenever this creature attacks or blocks, scry 2.