Arcus Acolyte is a uncommon Creature — Human Cleric Archer card from Modern Horizons 2 (MH2), collector number 361. Current market price: $0.17 (foil $0.28), TCGplayer market prices via Scryfall.
Reach, lifelink Outlast {G/W} ({G/W}, {T}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.) Each other creature you control without a +1/+1 counter on it has outlast {G/W}.