Gil Mandreaux

Whenever you successfully cast a creature spell,
you may pay {r} as that creature enters
the battlefield. If you do, create a tapped
treasure token.
{w}{u}, sacrifice {x} treasure tokens, {t}: Create a
copy of target artifact or creature with CMC
{x} or less under your control. Sacrifice that
token at the beginning of your next end step.
Activate only as a sorcery.