Abyssal Nexus

When Abyssal Nexus enters the battlefield, exile
target creature from your hand.

{t}, {x}, Pay {x} life: Create a token that's a copy of
the exiled creature card. That token has haste.
Sacrifice it at the beginning of the next end step.

{t}, Pay half your life, Sacrifice Abyssal Nexus:
You may cast the exiled card this turn.