My Buff Stacks Infinitely

Red light flashes, a layer of combat amplification, attack power +10. Punch a goblin! Stack another layer, attack power +20. Kick a ghoul! Continue to stack, attack power +30. One stick and one demon leopard! What? You ask me what to do when the devil comes? Talk to me about the 9999th level buff! Roger, who traveled to another world, unexpectedly became a knight of the gods after being betrayed by his teammates. He obtained the talent skills with infinite superposition of buffs, and then embarked on the path of no return as a melee mage... Wait, melee and mage, can these two words really go together?