Watchwing Scarecrow 
Artifact Creature — Scarecrow
This creature has vigilance as long as you control a white creature. This creature has flying as long as you control a blue creature.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL