Static Net is a uncommon Enchantment card from The Brothers' War (BRO), collector number 27. Current market price: $0.15 (foil $0.32), TCGplayer market prices via Scryfall.
When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield. When this enchantment enters, you gain 2 life and create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")