Frenemy of the Guildpact 

Creature — Spirit
Protection from enemy-colored multicolored (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything that's two enemy colors, such as blue and green.)
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL