Tomestones.. Again.. for a relic..

[BurningSoul]

For Manderville weapon stage 3, the weapon must have a Sweaty Chocobo Feather infused into its core, to grant it the power of a red chocobo. This is an item which may drop when you complete the Bozjan Critical Engagement "Hunt for Red Choctober" without dying even once; there is a 5% drop chance. In addition, you need a role-specific (Tank, Healer, Ranged Physical, Caster, Melee) piece of the Queen's Chariot from Delubrum Reginae; completion of DR has a 10% chance to drop the appropriate Chariot piece for the role you're currently playing. Delubrum Reginae (Savage) is guaranteed to drop the appropriate piece on completion.

Lastly, the process will require a Eureka Fragment as used in Physeos weapons, obtained in the same manner (via clearing Baldesion Arsenal in Eureka).

Please look forward to it?

I'd actually do this, unironically.