The Capitoline Triad is a mythic Legendary Creature — God Artificer card from Assassin's Creed (ACR), collector number 1. Current market price: $2.74 (foil $2.63), TCGplayer market prices via Scryfall.
Those Who Came Before — This spell costs {1} less to cast for each historic card in your graveyard. (Artifacts, legendaries, and Sagas are historic.) Exile any number of historic cards from your graveyard with total mana value 30 or greater: You get an emblem with "Creatures you control have base power and toughness 9/9."