Kappa Cannoneer is a rare Artifact Creature — Turtle Warrior card from Magic Online Promos (PRM), collector number 97923.
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Ward {4} Whenever this creature or another artifact you control enters, put a +1/+1 counter on this creature. It can't be blocked this turn.