Frenemy of the Guildpact is a rare Creature — Spirit card from Mystery Booster Playtest Cards 2019 (CMB1), collector number 74. Current market price: $0.20, TCGplayer market prices via Scryfall.
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.)