Captain Jack Harkness

First strike, Haste
When Captian Jack Harkness attacks, it gets
+X/+0 until end of turn, where X is the number
of experience counters on it.
Whenever Captain Jack Harkness dies, it gains
"Return this card to the battlefield at the
beginning of the next end step with X+1
experience counters on it, where X is the
number of experience counters it had when
it died."