When a Mara ingests a Catalyst (and some optional Sediment Fragments), it evolves into a Kodamara that takes on the physical traits possessed by that Catalyst.
Higher amounts of Fragments increase the rarity of the Kodamara.
Once evolved, a Kodamara can hunt, farm, or enchant — but they can only do one at a time, and will always be most effective at their original function.
Catalysis
To evolve into a Kodamara, a Mara must go through a catalysis.
The Catalysis Process