Founding the Third Path is a uncommon Enchantment — Saga card from Dominaria United (DMU), collector number 50. Current market price: $0.26 (foil $0.31), TCGplayer market prices via Scryfall.
Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.) I — You may cast an instant or sorcery spell with mana value 1 or 2 from your hand without paying its mana cost. II — Target player mills four cards. III — Exile target instant or sorcery card from your graveyard. Copy it. You may cast the copy.