Dr. Bones.
Skeletron Prime
i thought it was only after beating the terra lord enemies get buffed. but when i killed the pumpking horseman the endgame bosses got like 200000 hp and dealt 200 dmg every attack... i am not even able to beat the mech bosses now because of this massive increase...
(i can beat them with luck and extreme overuse of the bloodlord daggers)
(i can beat them with luck and extreme overuse of the bloodlord daggers)