Sylph Labyrinth (CC)

Sylph Labyrinth (風精の迷宮, シルフラビリンス, Shirufu Rabirinsu) is a treasure hunting guild formerly located in Fiore, but now located in the island of Felidia.

Overview
Not much is known about Sylph Labyrinth other than the fact that, being a Treasure Hunter Guild, its members are tasked with finding precious or rare items, which they refer to as Treasures. One of such Treasures are the unique Gold Keys employed by Celestial Spirit Mages, as shown by three of the guilds' Treasure Hunters chasing Lucy Heartfilia after seeing her summoning Sagittarius, due to the intrinsic rarity of the artifact used to call him forth. Sylph Labyrinth appears to use a system similar to that of Mage Guilds when it comes to ranking Treasures: The Eternal Flame protecting the Sun Village was referred to as a "S-Class Super Treasure" by some members of the guild.

Strength
Sylph Labyrinth, renowned as the strongest (or at least most resourceful) among Treasure Hunter Guilds, having won the Grand Secret Treasure Games, the seeming equivalent of the Grand Magic Games in its category. The three members shown so far have displayed weapon skills and fighting prowess great enough to make up for their lack of Magical abilities: they were powerful enough to fight on par with one of the best teams of Fairy Tail (usually acknowledged as the strongest Mage Guild in Fiore), which at the time was missing one of its top members, but still included two Dragon Slayers, an Ice-Make Mage and a Celestial Spirit Mage; even Natsu Dragneel, one of the group's Dragon Slayers as well as one of Fairy Tail's strongest Mages, went on to praise the trio's power. Drake made claim that an average Mage Guild can't possibly be a match for them. Sylph Labyrinth members seem to possess rather advanced weaponry. Guild members Hiroshi and Rala specialize in melee combat using, respectively, a sword and a hammer (which are both notable for being heavily customized and possessing special features), while Drake excels at ranged confrontations, and acts as the Guild's sniper.