Alseid of Life's Bounty is a uncommon Enchantment Creature — Nymph card from Theros Beyond Death (THB), collector number 353. Current market price: $1.02 (foil $2.04), TCGplayer market prices via Scryfall.
Lifelink {1}, Sacrifice this creature: Target creature or enchantment you control gains protection from the color of your choice until end of turn.