Mortai is the “Spirit of the Winds” or “Breath of Life” of the Beastlands. It answers when called by its name.
Agatha obtains its true name and invokes it to unleash storms that allow the salvation of Krigala, during the war of the Beastlands.
The messenger cloud
The archive identifies Mortai with the messenger cloud of the Meghadūta, the Sanskrit poem by Kālidāsa (about the 5th century) in which an exiled yaksha asks a cloud to carry a message of love to his distant wife.