Haunt the Network is a uncommon Sorcery card from Aetherdrift (DFT), collector number 207. Current market price: $0.27 (foil $0.33), TCGplayer market prices via Scryfall.
Choose target opponent. Create two 1/1 colorless Thopter artifact creature tokens with flying. Then the chosen player loses X life and you gain X life, where X is the number of artifacts you control.