Tergrid's Shadow 
Instant
Each player sacrifices two creatures.
Foretell 
(During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL