Acuar, Technomaster

+1: Acuar, Technomaster deals 1 damage to target creature. If you control seven or more artifacts, destroy that creature.
-6: Destroy target creature. Acuar, Technomaster deals damage to that creature's controller equal to the number of artifacts you control.
-12: Destroy up to X target creatures, where X is the number of artifacts you control. If you control twenty or more artifacts, you win the game.