Blazethorn Scarecrow 
Artifact Creature — Scarecrow
This creature has haste as long as you control a red creature. This creature has wither as long as you control a green creature. (It deals damage to creatures in the form of -1/-1 counters.)
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL