|Race||Unknown, later hydra avatar|
|Sources||A Planeswalker's Guide to Alara, The Soul of the World|
Progenitus, the Soul of the World, is a being of yet unspecified nature on the plane of Alara who, according to the Animas' visions, had become bored with creation and unleashed five storms to consume it: Wildfire, Earthquake, Windstorm, Flood, and Void.
His actions were stopped by the elf Cylia who forced it (via poisoned dagger) to assume the form of a five-headed hydra avatar to stop his plans; although Alara was already broken into the Shards. Due to the lack of blue and black mana in the shard later-known as Naya, he fell into a slumber, in the Valley of the Ancients.
Millenia later, he appeared to Mayael, the newly appointed anima, and asked to speak with Cylia, unaware that she had perished a millenia ago. Prior to the Conflux, Progenitus reunited into five heads, telling Mayael to build up an army to counteract Sarkhan Vol's invasion of dragons.
|Expansions: Shards of Alara | Conflux | Alara Reborn|
|Shards: Bant | Esper | Grixis | Jund | Naya|
|Characters: Ajani | Elspeth Tirel | Nicol Bolas | Rafiq | Sarkhan Vol | Tezzeret|
|Others: Etherium | Jazal | Kathari | Leotau | Maelstrom|