Whenever you cast your second spell each turn, put a +1/+1 counter on this creature. It can't be blocked this turn.

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.

Flash (You may cast this spell any time you could cast an instant.)

Flying

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Whenever you cast a spell with mana value 5 or greater, put two +1/+1 counters on this creature.

Flash (You may cast this spell any time you could cast an instant.)

Whenever you cast a spell during an opponent's turn, put a +1/+1 counter on this creature.

Vigilance

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.

When this creature dies, create a Clue token. (It's an artifact with ", Sacrifice this token: Draw a card.")

Whenever you cast your second spell each turn, this creature gets +2/+0 until end of turn and can't be blocked this turn.

Flying, haste

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Flying

Whenever a player casts their second spell each turn, this creature connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Flying

Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature.

Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature, then scry 1. (To scry 1, look at the top card of your library, then you may put that card on the bottom.)

Flying

This creature enters with an oil counter on it.

This creature gets +1/+1 for each oil counter on it.

Whenever you cast a noncreature spell, put an oil counter on this creature.

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.

When this creature dies, create a 1/1 colorless Thopter artifact creature token with flying.

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 your second spell each turn, choose target creature an opponent controls. If it's tapped, put a stun counter on it. Otherwise, tap it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Whenever you cast your second spell each turn, draw a card.

Flying

Whenever you cast a noncreature spell, this creature gets +1/+0 until end of turn.