Meat Pigeon Mage, I Unlimitedly Choose Hex to Strengthen

Traveling to a world where everyone changes their profession, Chen Yi awakens to the D-level mage profession. He thought his future was hopeless, but he unexpectedly awakened the Hex Meat Pigeon System. Each time he gains a level, he can choose an enhancement to improve himself! A "Secret Unsealing" at the beginning directly gives you a magic explosion and a big hat, and you also get the Hex strengthening rune "Axiom Arc", which restores mana every time you kill! While others were still working hard to level up the dungeon in a team, Chen Yi had already broken the record by clearing the most difficult dungeon alone. At this time, everyone was not calm. Isn't he a D-level mage? Why is it so powerful? A few years later, Chen Yi, whose body was covered with Hex-enhancing runes, stood above the abyss, and a magic circle fell to suppress the abyss! The abyss plane was completely panicked: Where is the D-class mage that we agreed on? Is this the Star Casting Dragon King?