Preoccupied Warden

Haste
{t}: Exile target creature an opponent controls.
As long as that card remains exiled, it's owner
may cast it without paying its mana cost.
Whenever an opponent casts a creature exiled
with Preoccupied Warden, create a treasure
token.
"I won't let you outta my sight for no- Ooo!
Shiny!"