Kappa Cannoneer
Artifact Creature — Turtle Warrior{5}{U}4/4
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.
Colour identity Blue · Improvise, Ward
In short
Kappa Cannoneer has 7 listed printings; the most valuable is the Extended Art printing from NEC at US$2.98 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
Every Kappa Cannoneer printing
Extended Art
Kappa Cannoneer
NEC · 50
Price not tracked
Retro Frame
Kappa Cannoneer
MH3 · 401
TCGplayer market
US$1.74
Kappa Cannoneer
MKC · 108
Price not tracked
Kappa Cannoneer
NEC · 14
Price not tracked
Kappa Cannoneer
MH3 · 270
Price not tracked
Kappa Cannoneer
EOC · 74
Price not tracked
Kappa Cannoneer
FDC · 64
TCGplayer market
US$0.29