The humps on Camerupt’s back are formed by a transformation of its bones. They sometimes blast out molten magma. This Pokémon apparently erupts often when it is enraged.
Hidden Ability
The Pokémon’s hot magma coating prevents it from being frozen.
Reduces the power of supereffective attacks that hit the Pokémon.
The Pokémon is angered when it takes a critical hit, and that maxes its Attack stat.