Silver Shining Regal Spear

Mercury Magic: Silver Shining Regal Spear (水銀魔法『銀の煌王槍』) is a Mercury Magic spell.

Description
With an open grimoire, the user holds out the palm and extends from it a long beam made of shining mercury. The beam follows the movement of the user's palm. It is sharp enough to pierce and slice through several feet of rock.