Umbral Elemental is a Splinterlands character.

Splinterlands is an NFT Trading Card Game based in the world of Praetoria.

Lore:

From the deepest bowels of the Lower Planes, where darkness crushes shadow until it’s whiter than bone, Craniax the Quick conjures umbral elementals to serve as his guardians. Chained in plates of dark iron and bound to his will, they protect their master as he scours the Shimmering Coasts for the secret of Praetoria.

They drift around him, drawing fire, absorbing magic, and casting spells born of chaos, death, and destruction. They move with purpose—just not their own. Their purpose is their master’s, and he will not release them until he has what he came for.