Angela, L Corp. Managing A.I.

Spells your opponents control that target Angela, L Corp.
Managing A.I. cost an additional {x} to cast, where X is
equal to the number of permanents on the battlefield with
finality counters on them.

{t}, Sacrifice another creature: Shuffle your library, then
reveal cards from the bottom of your library until you
reveal a Horror permanent card. Put that permanent on
the battlefield tapped with a finality counter on it.
Shuffle all the other cards revealed this way into your
library.