Unruly Catapult 
Artifact Creature — Construct
Defender
: This creature deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap this creature.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL