Snakeskin Veil is a uncommon Instant card from Strixhaven Mystical Archive (STA), collector number 57. Current market price: $0.30 (foil $0.57), TCGplayer market prices via Scryfall.
Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)