Kralkatorrik, Fury of Elona

Flying, trample
Ward {2}
At the beginning of each end step put a crystal
counter on target creature. It becoms a 3/3
artifact creature crystal with "This creature
attacks each combat if able. When a creature with
a crystal counter on it dies, destroy all other
creatures with crystal counters." and loses all other abilities.
Whenever a creature with a crystal counter dies,
it deals 3 damage to its controller.