Hungering Yeti 
Creature — Yeti
As long as you control a green or blue permanent, you may cast this spell as though it had flash. (You may cast it any time you could cast an instant.)
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL