Its followers are usually orcs and half-orcs. Many of them are Lawful Good Clerics and Paladins.
These orcs and half-orcs are very different from our common impressions. They strongly believe that Orcs should, and are able to live peacefully together with other surfaces races---except for the treacherous elves. These well-disciplined acolytes will go out of their ways to help other surface races in order to build the new reputation of Orcs.
Instead of the widely spread tale that the Elven patron, Corellon Larethian, took Gruumsh's eye in combat, the cultists advocate a different story. Gruumsh the True Seer took his own eye, so he can be forever vigilant against Elven treacheries. The greatest treachery among all is the Elven guise of culture, magic, and elegance. Elves were the first ones to tap into the power of the weave. They exploited the benefit for thousands of years, which sustained their extravagant society. However, the dire consequence of a weakened weave, and the chaos from the constant fight over its control, is suffered by all races across Faerun.
From these Orcs, any non-elf race can expect nothing less than a common paladin. Stern, kind, and very helpful. Their attitude toward elves varies a lot, though. For example:
1. Wild elves, especially wild elf druids, are viewed with the highest esteem. They recognize the mistake of their ancestors and are trying their best to seek remedy and restore balance. TWG acolytes will even consider these Elves more devout in the course of Elven repentance.
2. Elf commoners should not be held guilty for the sins of their ancestors. However, they should at least be aware of it and admit the truth.
3. Half-Elves are the tragic consequence of other races fallen prey of Elven treachery. They should be treated with pity and sympathy.
4. Drows are as treacherous as their golden brothers, but at least they admit it.
5. Elven nobles continues to exploit the legacy of their ancient treachery. They do not even deserve a quick death by the honorable Orcish blades. Their secrets should be exposed and they should be publicly shamed for the rest of their lives.
An TWG acolyte roll at advantage against any Elven illusion and deception, although they tend to disbelieve Elves even if they are telling the truth. It is unclear whether such effect is magical, or is it a simple consequence of their constant paranoia over everything Elven.
Rumors:
A few scholars in Candlekeep noticed this emerging cult and are astonished by such blatant contradiction between TWG and the typical, salvage icon of Gruumsh. A popular theory is that the cultists are actually worshiping a deceiver. It is well known that any deity of the Trickery domain, such as Mask, has the ability to disguise as another deity and steal the divine power from worshipers gathered in the process. It could also be done by a powerful outsider. For example, a popular theory favors a Spectator---for its Lawful Neutral alignment, and its icon of a single eye which mimics the holy symbol of Gruumsh. None of these theories can be directly confirmed though.
