Shom'zaa

Indestructible
Shom'zaa loses indestructible for that turn if
opponent sacrifices an artifact. If the artifact is
white, Shom'zaa loses indestructible permanently.
When Shom'zaa leaves the battlefield, destroy
target creature.
"Shom'zaa leaps upon you and rakes you with his terrible claws." - Joe Dever