Renahz, the Mimic

Whenever a creature enters the battlefield
under an oppponent's control, you may pay
{u}{g}. If you do, create a copy of that creature
under your control. Activate this ability once
per turn.
Whenever an opponent casts an instant or
sorcery, you may pay {u}{r}. If you do, you may
copy that spell and choose new targets for the
copy. Activate this ability once per turn.