Castilla Relic Exchanger

While this isn't a raid, it can drop some pretty darn good items.
Simply by exchanging relic pieces for random items.

Location:
Castilla, Garrison 1 and inside Choas Tower

it costs 3k feso to exchange 3 normal relic pieces
it costs 9k feso to exchange 3 gold ancient relic pieces.
many items can drop from both pieces, but gold pieces have a better chance then normal pieces.

Droplist both relics:

• Ancient Relic (normal pieces only)
  
• Gold Ancient Relic Piece
• Gold Ancient Relic
• 84e weapon/armor
• 30 ar weapon (92e & 100)
• Le Noir
• 96e armor
• 92e armor
• Recipe - Dragon Heart
• Recipe - Elite le Blanc
  
• Recipe - Le Noir
• Recipe - 96e armor
• Recipe - 92e armor
• Recipe - Qualified belt (any type)
• Recipe - Artisan belt (any type)
• Recipe - Magic belt (any type)
  
• Promotion Recipe - veteran
• Random below veteran skill ring
• Random rough ore
• Jewel Recipe
• Elemental Jewel
• Pure gold bar
• Random Symbol

Exclusive drops of golden relics:

• Skill ring
• Stance Ring
  

Source:
jge exchanger list