Defeat the King of the Undead

My mission is to defeat the King of the Undead. The opponent is a max-level boss and has a bunch of subordinates. Even the gods of this world can't do anything to him. But you are unlucky if you meet me. The Bronze Five, the Lord of Elements, the Dragon Guardian, the Legion of Destruction, and the Evil God. Behind me, I have the power of the universe! Hehe, should I use the princess set or the queen set at the beginning? Why can't I only summon the headman? Card level, rock, black iron, bronze, silver, gold, epic, legend, myth This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.