Merlin, Eater of Rocks

Eminence—Whenever another nontoken Wizard
enters the battlefield under your control,
if Merlin, Eater of Rocks is in the command zone
or on the battlefield, you may pay {1}.
If you do, create a token that's a copy of
that Wizard. The token gains haste.
Exile it at the beginning of the next end step.
Tap five untapped Wizards you control: Target
player loses 7 life.