Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Whenever this creature mutates, return target permanent card from your graveyard to your hand.

Flying
At the beginning of your upkeep, mill a card. If an instant or sorcery card was milled this way, transform Aberrant Researcher.

Create a 3/3 green Centaur creature token.
Fuse (You may cast one or both halves of this card from your hand.)

Changeling (This card is every creature type.)
: Target creature gains all creature types until end of turn.
: Target creature loses all creature types until end of turn.

Haste (This creature can attack and as soon as it comes under your control.)
At the beginning of the end step, sacrifice Arc Runner.

When you cast this spell, you may return target creature card from your graveyard to the battlefield.
Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)

Flying, deathtouch
When Baleful Strix enters the battlefield, draw a card.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Add for each creature you control.

Target creature and all other creatures with the same name as that creature get -3/-3 until end of turn.

At the beginning of your upkeep, you lose 1 life and create a 1/1 black Faerie Rogue creature token with flying.

Haste
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Shroud (This creature can't be the target of spells or abilities.)
Fading 3 (This creature enters the battlefield with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)

Flying
: Blighted Bat gains haste until end of turn.

, Pay 1 life: Add .

As an additional cost to cast this spell, sacrifice a creature.
Destroy target creature.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Whenever this creature mutates, return target permanent card from your graveyard to your hand.

Whenever Brazen Wolves attacks, it gets +2/+0 until end of turn.

Flash
When Briarhorn enters the battlefield, target creature gets +3/+3 until end of turn.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Target creature gets +3/+1 and gains trample until end of turn.