Proxima Midnight

Whenever you cast a noncreature spell, surveil 1.
(Look at the top card of your library. You may put
that card into your graveyard.)
Delirium — As long as there are four or more
card types among cards in your graveyard,
Proxima Midnight gets +2/+2, has flying, and
attacks each combat if able.
"He'll die alone. As will you."
—Proxima Midnight