Biosynthic Burst is a common Instant card from Edge of Eternities (EOE), collector number 173. Current market price: $0.28 (foil $0.34), TCGplayer market prices via Scryfall.
Put a +1/+1 counter on target creature you control. It gains reach, trample, and indestructible until end of turn. Untap it. (Damage and effects that say "destroy" don't destroy it.)