Whirler Virtuoso is a uncommon Creature — Vedalken Artificer card from Kaladesh (KLD), collector number 190. Current market price: $0.23 (foil $0.48), TCGplayer market prices via Scryfall.
When this creature enters, you get {E}{E}{E} (three energy counters). Pay {E}{E}{E}: Create a 1/1 colorless Thopter artifact creature token with flying.