Simon, The Piercer of Heavens

Mecha Advance- whenever an artifact enters the battlefield you may cast target artifact from any grave without paying its cost

All Mech Artifacts you control have +1 +1 counters equal to the amount of "Pilot" creatures you control

{x}{r}{u}- deal {x} damage up to {x} targets creatures, planeswalkers and players

This creature power and toughness is {x}