Spark Elemental is a common Creature — Elemental card from Fifth Dawn (5DN), collector number 79. Current market price: $0.27 (foil $1.17), TCGplayer market prices via Scryfall.
Trample, haste (This creature can deal excess combat damage to the player or planeswalker it's attacking. This creature can attack and {T} as soon as it comes under your control.) At the beginning of the end step, sacrifice this creature.