Together as One is a rare Sorcery card from Secrets of Strixhaven Promos (PSOS), collector number 4p. Current market price: $1.31 (foil $0.81), TCGplayer market prices via Scryfall.
Converge — Target player draws X cards, Together as One deals X damage to any target, and you gain X life, where X is the number of colors of mana spent to cast this spell.