Aethergeode Miner is a rare Creature — Dwarf Scout card from Modern Horizons 3 Commander (M3C), collector number 163. Current market price: $0.26, TCGplayer market prices via Scryfall.
Whenever this creature attacks, you get {E}{E} (two energy counters). Pay {E}{E}: Exile this creature, then return it to the battlefield under its owner's control.