Maryoku Kyōka

Maryoku Kyōka (Japanese: 魔力強化まりょくきょうか Romaji: maryoku kyōka, translated as Strengthening) is thought to be an earth shamanistic spell. This is not the name of the spell, the Power Words are unknown.

The spell makes objects more durable and much harder to break. A simple rope can hold a smaller dragon, and a normal brick wall becomes as though as the wall of a fortress when affected by this spell.