Morgan la Fay

Dethrone (Whenever this creature attacks the
player with the most life or tied for most life,
put a +1/+1 counter on it.)
Other creatures you control have dethrone.
Whenever a creature you control with a +1/+1
counter on it dies, return that card to the
battlefield under your control at the beginning
of the next end step.
Morgan believes Arthur is dead...