Absorb Vis is a common Sorcery card from Conflux (CON), collector number 40. Current market price: $0.20 (foil $0.17), TCGplayer market prices via Scryfall.
Target player loses 4 life and you gain 4 life. Basic landcycling {1}{B} ({1}{B}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)