Urdrin, Shadow Overreach

Flying, menace
When Urdrin dies, you may pay {w/b}{w/b}{w/b}. If you
do,exile it with five shadow counters on it and
create a 2/2 white and black Human Cleric
legendary creature token named Urdrin Disguised
with "Pay 3 life: Remove a shadow
counter from a permanent you control".
Whenever Urdrin has no shadow counters, return
it to the battlefield under its owner's control.