Ambush Commander 
Creature — Elf
Forests you control are 1/1 green Elf creatures that are still lands.
, Sacrifice an Elf: Target creature gets +3/+3 until end of turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL