Skanos, Blue Dragon Vassal 
Legendary Creature — Dragon Ranger
Flying Whenever Skanos, Blue Dragon Vassal attacks, another target attacking creature gains flying and gets +X/+0 until end of turn, where X is Skanos's power.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL