Tempest Harvester is a common Creature — Merfolk Wizard card from Modern Horizons 3 (MH3), collector number 73. Current market price: $0.16 (foil $0.23), TCGplayer market prices via Scryfall.
When this creature enters, you get {E}{E} (two energy counters). {T}, Pay {E}: Draw a card, then discard a card.