Metalis, Robot Overlord

+1: Destroy all artifacts that you don't control. For each artifact destroyed this way, put a loyalty counter on Metalis, Robot Overlord.
-2: Until your next end step, whenever an artifact enters the battlefield, put a +1/+1 counter on each creature you control.
-8: Each player creates seven colorless 0/1 Construct artifact creature tokens with, "This creature can't block."