Deepwood Legate 
Creature — Shade
If an opponent controls a Forest and you control a Swamp, you may cast this spell without paying its mana cost.
: This creature gets +1/+1 until end of turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL