Desert trolls are the warm-weather kin to the standard troll. More solitary and sneaky, these trolls set up detailed ambushes in the sandy wastes they call home.
Desert trolls are unusual in that they don't fear fire like most trolls. Instead, they fear water, and water shuts down their regeneration just as acid does, while fire does not. The purer and cleaner the water, the more it dissolves their very essence.