Witherbloom Pledgemage is a common Creature — Treefolk Warlock card from Strixhaven: School of Mages (STX), collector number 249. Current market price: $0.16 (foil $0.19), TCGplayer market prices via Scryfall.
Magecraft — Whenever you cast or copy an instant or sorcery spell, you gain 1 life.