The Summoning System Is the Weakest? I, the Card Summoner!

In a world where everyone is awakened, elixirs, secret treasures, delicacies, and rare objects are all possible in the secret realm. Countless professionals poured into the secret realm one after another. Rosen was reborn into this world, awakened and changed his profession to become a Summoner! What? The summoning system is the weakest? ! I, the divine elephant, suppresses the prison and orders the five ghosts! I have a Teigu in my left hand, a Zanpakutō in my right hand, wearing an anti-god suit, and an Infinity Gauntlet! Behind him are the sky-blocking crow, the hundred-armed giant holding the sky and the earth, and the star-casting dragon king devouring the world! Say it again, the summoning system is the weakest? !