Disloyalty's Demise

Tap target attacking creature and remove it from
combat. That creature doesn't untap during its controller's next untap step. If that creature
attacked you, it becomes an artifact in addition to
its other types.
"You have been found guilty of betraying the church
and fleeing to an enemy faction. You shall give up
your flesh in favor of a more elegant body as
punishment." ~Eorlith, High Inquisitor of K'Thrilia