Shrouder

The Shrouder is a Hero Unit for the Gohma, when Queen Sulkaris is chosen as a Hero.

Summary
These Gohma are actually completely harmless on their own. Instead they can deploy and become immobile, creating a thick fog of Gohma Shroud around themselves. It's fog reduces enemy line of sight and makes ranged attacks much more inaccurate against your units within it's aura. Enemy regeneration is also entirely halted while in the Gohma Shroud.

Trivia

 * Shrouders used to be called "Shroud Walkers" and were quite bigger. They were also the unique Hero Unit of Agitha in earlier versions of the game.