Krosan Druid is a common Creature — Centaur Druid card from Dominaria (DOM), collector number 167. Current market price: $0.07 (foil $0.22), TCGplayer market prices via Scryfall.
Kicker {4}{G} (You may pay an additional {4}{G} as you cast this spell.) When this creature enters, if it was kicked, you gain 10 life.