The Rusty Tower

: All artifacts have "Whenever this card becomes tapped, it doesn't untap during its controller's next untap step.
+1: The Rusty Tower becomes a 5/5 red Giant Artifact creature until end of turn. Prevent all damage dealt to it.
-X: Destroy X target tapped Artifacts. You may select one of them. If you do, return it to the battlefield under your control.