Shielding Plax is a common Enchantment — Aura card from Dissension (DIS), collector number 147. Current market price: $0.20 (foil $2.51), TCGplayer market prices via Scryfall.
({G/U} can be paid with either {G} or {U}.) Enchant creature When this Aura enters, draw a card. Enchanted creature can't be the target of spells or abilities your opponents control.