His victims don't have time to feel despair.

Nekrataal

First strike
When this creature enters, destroy target nonartifact, nonblack creature. That creature can't be regenerated.

"You can't protect them all, Jace."
—Vraska

The List

Eternal Masters

First strike
When Nekrataal enters the battlefield, destroy target nonartifact, nonblack creature. That creature can't be regenerated.

Commander 2014

Duel Decks: Jace vs. Vraska

Tenth Edition

Nothing happens if there are no nonartifact, nonblack creatures on the battlefield when Nekrataal enters the battlefield, but if there is one, you must target it, even if it’s a creature you control.