Electrostatic Pummeler is a rare Artifact Creature — Construct card from Kaladesh (KLD), collector number 210. Current market price: $0.37 (foil $0.59), TCGplayer market prices via Scryfall.
When this creature enters, you get {E}{E}{E} (three energy counters). Pay {E}{E}{E}: This creature gets +X/+X until end of turn, where X is its power.