Arbalest Engineers (The Brothers' War)

Creature Ñ Human Artificer - When this creature enters, choose one Ñ
¥ This creature deals 1 damage to any target.
¥ Put a +1/+1 counter on target creature. It gains trample and haste until end of turn.
¥ Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")