Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature.
, Remove X ki counters from this creature: Tap X target creatures.

Flying, vigilance
Whenever you gain or lose life during your turn, this creature gets +1/+0 until end of turn.

Domain — This creature gets +1/+1 for each basic land type among lands you control.

When this creature enters, return target nonland permanent card with mana value 2 or less from your graveyard to your hand.
Flurry — Whenever you cast your second spell each turn, tap target creature an opponent controls.

Flying, vigilance
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +3/+3, is black, has trample, and has "At the beginning of your upkeep, sacrifice a creature."

When this creature enters, draw a card.
At the beginning of combat on your turn, if you control an Equipment, you may pay . When you do, attach target Equipment you control to target creature you control.

As long as this creature is untapped, all combat damage that would be dealt to you by unblocked creatures is dealt to this creature instead.
Morph

, : Search your library for a land card, reveal it, put it into your hand, then shuffle. Activate only if an opponent controls more lands than you.

When this creature enters, put a +1/+1 counter on each of up to two target creatures.
Warp

Flying
Whenever one or more other creatures you control with power 2 or less enter, draw a card. This ability triggers only once each turn.

Flying
When this creature enters, target creature gets +2/+2 and gains flying until end of turn.

Flying
When this creature dies, you may search your library for a card named Welkin Hawk, reveal that card, put it into your hand, then shuffle.

: Prevent all damage that would be dealt to target tapped Merfolk or Kithkin creature this turn.

Flash
When this creature enters, exile up to one other target non-Fox creature until this creature leaves the battlefield.
, Sacrifice this creature: You gain 2 life.

Sacrifice this creature: Destroy target artifact or enchantment. Activate only as a sorcery.

, : Tap target creature.
Morph

: Until end of turn, target creature gains "This creature can't attack or block unless its controller pays for each Cleric on the battlefield."

Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, look at the top five cards of your library. You may reveal a creature card with mana value 3 or less from among them. You may put it onto the battlefield if it's your turn. If you don't put it onto the battlefield, put it into your hand. Put the rest on the bottom of your library in a random order.

Flying
Cold Breath — When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

First strike
Protection from black

Flying, first strike
When this creature enters, destroy up to one target nonbasic land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

When this creature enters, you take the initiative.
At the beginning of each opponent's upkeep, untap a creature you control. If you've completed a dungeon, untap all creatures you control instead.

Protection from black
: This creature gains flying until end of turn.
: This creature gets +1/+0 until end of turn.

When White Widow enters, choose one —
• Put a +1/+1 counter on each of up to two target creatures.
• Return target artifact or enchantment card from your graveyard to your hand.

Flash
When this creature enters, return a creature you control to its owner's hand.

Flying, first strike
: This creature gets +2/+0 until end of turn. Activate only once each turn.

At the beginning of combat on your turn, up to one target creature gains first strike and vigilance until end of turn.

Look to the Stars — At the beginning of your upkeep, put a time counter on Wilfred Mott. Then look at the top X cards of your library, where X is the number of time counters on Wilfred Mott. You may put a nonland permanent card with mana value 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

When Will Riker enters, put a +1/+1 counter on another target creature you control.