Alchemist's Gift is a common Instant card from Foundations Jumpstart (J25), collector number 397. Current market price: $0.31, TCGplayer market prices via Scryfall.
Target creature gets +1/+1 and gains your choice of deathtouch or lifelink until end of turn. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it. Damage dealt by a creature with lifelink also causes its controller to gain that much life.)