Overwhelming Encounter is a uncommon Sorcery card from The List (PLST), collector number CLB-245. Current market price: $0.12, TCGplayer market prices via Scryfall.
Creatures you control gain vigilance and trample until end of turn. Roll a d20. 1—9 | Creatures you control get +2/+2 until end of turn. 10—19 | Put two +1/+1 counters on each creature you control. 20 | Put four +1/+1 counters on each creature you control.