I'm A Support, But I Can Destroy The World (IMMORTAL ANAMNESIS)

After dying a random death, Creed is reborn into a world filled with monsters, adventurers, and magic. And he has a strange ability: Absolute Biological Control which helps him manipulate everything about his own body, including, but not limited to: unlimited mana regeneration and immortality. There's just one problem, though: he can't deal any damage. In fact, his attacks do the exact opposite: it heals. Anything. Because adventuring is the only work people like him can do in that world, Creed decides to enter the decrepit Ardainian Lodge. Joined by a gluttonous, mysterious child with a wide knowledge of alchemy and a grumpy teenager with OP abilities but low HP, the trio travels across Midgaia to do various commissions, ranging from simple fetch quests to destroying an entire country. However, the more he gets entangled with the strange world he was reborn into, the more he discovers there is more to everything than meets the eye. Vanishing gods. Ley lines going haywire. Monsters running amok. One, that is connected heavily to how and why he died in the first place. Why nine years of his memory were gone. And why, the most ancient forces in that world, are out to get a no-damage adventurer like him. Is he truly the hero? A mere pawn in the gods' games? Or the primordial evil prophesied thousands of years ago? I'M A SUPPORT, BUT I CAN DESTROY THE WORLD