|English||Inverse Mountain Crystal|
Bakudō #73. Tozanshō (倒山晶, Inverse Mountain Crystal) is a Kidō spell.
As the spell ignites at a single point, blue energy extends upward to four points and forms an inverted pyramid, which solidifies into a barrier around the caster. The spell is usable around other already active spells. It can be used to trap others inside of it.