Zenith Flare is a uncommon Instant card from Ikoria: Lair of Behemoths (IKO), collector number 217. Current market price: $0.21 (foil $0.32), TCGplayer market prices via Scryfall.
Zenith Flare deals X damage to any target and you gain X life, where X is the number of cards with a cycling ability in your graveyard.