Ceremony of Mo Athair

The Ceremony of Mo Athair (モ・アサイアの儀) was a large-scale magical ceremony which Coronzon intended to use in order to cause the breakdown of the world.

Etymology
The ceremony was named by Coronzon in reference to its summoner, Samuel Liddell MacGregor Mathers, who had claimed that the name Mathers was derived from 'Mo Athair' (supposedly old Gaelic for 'posthumous one'), 'proof' that he was of proper, noble highland descent and the Count of Glenstrae.

Principles
The ultimate goal of the ceremony is the destruction of the Pure World, which would cause the phases pilled up on top of it to collapse, leaving nothing behind. In this way, it is the opposite of the ceremony from Aleister's Plan which was intended to shatter the phases and leave the core world of physical laws behind.

Coronzon Arc
After freeing herself from her contract with Mathers, Coronzon stole the Honours of Scotland and hijacked the Queen Britannia in order to initiate the Ceremony of Mo Athair.

During the attack on the ship by the British forces, due to the actions of Aleister's and Accelerator's groups, Coronzon faced defeat before reaching the ideal location for the ceremony and attempted to activate the ceremony prematurely. However, the revived recreation of Dion Fortune made use of her fellow Golden Dawn recreations in an original spell which blocked the signal towards Scotland.