Riddle Gate Gargoyle is a common Artifact Creature — Gargoyle card from Modern Horizons 3 (MH3), collector number 201. Current market price: $0.17 (foil $0.25), TCGplayer market prices via Scryfall.
Flying When this creature enters, you get {E}{E}{E} (three energy counters). Whenever you attack, you may pay {E}{E}. When you do, target creature you control gains lifelink until end of turn.