Norin the Clony

When a player casts a spell or a creature attacks,
exile Norin. Return it to the battlefield under its
owner's control at the beginning of the next end
step.
Whenever Norin enters the battlefield, you may
pay {1}{u}{r}. If you do, trigger target opponent's
creature's enters the battlefield trigger, but you
are it's owner and chooses it's targets.
Whenever you clone an opponent's creature card
that has an enters the battlefield trigger, if Norin
is exiled, it triggers an additional time.