Maro-Sorcerer

A Maro-Sorcerer, also known as a Force of Nature, is the elemental manifestation of the land, either brought about by strong magic, or of nature’s own will. In Dominaria, it's believed that every wood, from a sprawling forest or a shady grove, has a spirit or avatar that keeps the site safe: these creatures can be befriended with the right magic.
Dominarian forces of nature are sometimes called "maro". Some of them are servants of the world-soul, Gaea.

One such creature was summoned by Dreygar and given the Dark Amulet, but was defeated by Aldon. Another was summoned by Greensleeves.

Multani, the most well known Maro-Sorcerer. Art by Daren Bader

List of Forces of Nature

Maro-Sorcerer	Forest	Location
Autumn Willow	Great Wood	Plane of Ulgrotha
Dare	An unnamed forest	New Argive on Dominaria
Force of Nature	In that form appeared Maro of Lat-Nam forests.	Lat-Nam island on Dominaria
Gaea's Liege	Whispering Woods	Aerona on Dominaria
Great Spirit	White Woods	Corondor on Dominaria
Lord Magnus	The forest on Argenti. (In prerevisionist continuity Llanowar.)	Madara on Dominaria
Molimo	Llanowar	Aerona on Dominaria
Muldrotha	Yavimaya (Urborg)	Urborg on Dominaria
Multani	Yavimaya (Terisiare)	Terisiare on Dominaria
Sol'Kanar	Khone	Corondor on Dominaria
Titania	Argoth	Terisiare on Dominaria

Trivia

Possibly inspired by Tolkien’s fictional universe character Radagast The Brown Wizard. The character is intimately connected to plants and animals, living his life in the depths of the forest of Mirkwood. In his depictions in movies and TV, Radagast is and old sorcerer on whose body and face grow living plants and fungi.

Maro is the word for the color brown in Romanian.