Reidane, Lord of the Worthy

Signature {1}{b}{r}(as you cast this spell you may pay
the signature cost, if you do copy it, the copy enters the battlefield transformed)
When this creature dies, return it to its owner's
hand at the beginning of the next end step
Whenever a creature you control becomes the
target of a spell or ability, put a +1/+1 counter on
that creature, then, if this is the first time this
ability has resolved this turn, copy that spell and
exile it, for as long as it remains exiled you may
cast it