Short answer: farm Enchant Relics in Fisch by fishing in The Depths, using high lure-speed rods, and buying from Merlin at Sunstone Island once you reach level 30. The Depths has the best fishing odds, and Aurora Borealis boosts them even more.
[9]

Best methods

  • Fish in The Depths. The wiki says Enchant Relics can be fished anywhere, but The Depths gives the best boosted chance at 1 in 100, and 1 in 33 during Aurora Borealis.
  • Use fast rods and lure-speed boosts. Player guides commonly recommend rods like Rapid Rod, Trident Rod, or Phoenix Rod, plus Hasty enchant and bait such as seaweed to catch faster.
  • Buy them from Merlin. Once you hit level 30, Merlin on Sunstone Island sells Enchant Relics for 11,000C$ each.
  • Open treasure chests and trade. Relics can also come from treasure chests, and some players use trading as a shortcut.

Fast farming setup

  1. Go to The Depths.
  1. Equip your fastest lure-speed rod.
  1. Use bait or enchants that increase lure speed, such as seaweed or Hasty.
  1. Fish during Aurora Borealis if possible.
  1. Buy extra relics from Merlin if you have the cash and level requirement.

What players say

ā€œThe best place to farm XP while you're fishing over hereā€ is Krakenā€™s Pool, and some guides say using the Rod of the Exalted One can speed up Exalted Relic farming.

ā€œThe more you fish the higher chances for you to get exalted relicā€ and high lure-speed setups help a lot.

Practical tip

If your goal is normal Enchant Relics, focus on The Depths and Merlin first; if you specifically want Exalted Relics, guides point to Rod of the Exalted One and very fast fishing setups instead.

TL;DR

The most reliable way to farm Enchant Relics in Fisch is to fish in The Depths with a fast lure-speed setup, then supplement with Merlinā€™s shop at Sunstone Island once youā€™re level 30.