Thir Arkore, Darksteel Tempest

Prevent all combat damage dealt to Thir Arkore, Darksteel Tempest.
During your combat phase, you may have Thir Arkore, Darksteel Tempest lose "Prevent all combat damage dealt to Thir Arkore, Darksteel Tempest" until end of turn. If you do, she gains +0/+5 and must be blocked by all creatures if able.