Electrickery is a common Instant card from GRN Guild Kit (GK1), collector number 29. Current market price: $0.65, TCGplayer market prices via Scryfall.
Electrickery deals 1 damage to target creature you don't control. Overload {1}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")