Thornwatch Scarecrow

Thornwatch Scarecrow

Artifact Creature - Scarecrow | Power/Toughness: 4 / 4 (CMC 6)
Thornwatch Scarecrow has wither as long as you control a green creature. (It deals damage to creatures in the form of -1/-1 counters.)
Thornwatch Scarecrow has vigilance as long as you control a white creature.