Piper of the Swarm

Rats you control have menace. 1B, T: Create a 1/1 black Rat creature token. 2BB, T, Sacrifice three Rats: Gain control of target creature.

Slaying Fire deals 3 damage to any target. Adamant — If at least three red mana was spent to cast this spell, it deals 4 damage instead.

Whenever you draw your second card each turn, create a 1/1 blue Faerie creature token with flying. 4UR: Draw a card, then discard a card.

Other Knights you control get +1/+1.

When this creature dies, put a +1/+1 counter on target Knight you control.

(T: Add W.)

(T: Add U.)

As an additional cost to cast this spell, sacrifice a creature. Fling deals damage equal to the sacrificed creature's power to any target.