The Stoned King

While Stoned King is in play, you may search your library for an artifact card if you do not already control artifact(s) with converted mana cost of {4} or less & put it into play tapped.

Artifacts you control are creatures aswell as any other types with power/toughness equal to their mana cost plus an additional +1/+1 counter

{1}{g}{r},{t}: Exert Target Creature, put a +1/+1 counter on it. It has hexproof until the end of turn.