Gateway To Nowhere

Thwart {4} (Counter this spell. Any player may pay this,
but they have to discard a creature card or sacrifice a
Non-Aberration creature & shuffle this into your library)
Imprint - When this enters the battlefield, you may exile
an Aberration with black in its casting cost from your
hand or one that you own on the battlefield.
{x}{t} Create a token that's a copy of the exiled card. X
is the converted mana cost of that card. (Only 4 copies
of said creature can be out at any given time)