Nivix, Aerie of the Firemind
Land
: Add 
.
, : Exile the top card of your library. Until your next turn, you may cast it if it's an instant or sorcery spell.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL