Tempered Veteran is a uncommon Creature — Human Knight card from Jumpstart 2022 (J22), collector number 254. Current market price: $0.14, TCGplayer market prices via Scryfall.
{W}, {T}: Put a +1/+1 counter on target creature with a +1/+1 counter on it. {4}{W}{W}, {T}: Put a +1/+1 counter on target creature.