Unlearn a spell

Otomai will only allow you to unlearn a spell if you have obtained certain relics by completing dungeons on Otomai's Island. The dungeons you will need will vary with your level.

Levels 1?-59?
 * Complete the Grotto Hesque dungeon to obtain a Great Coralator Relic.

Levels 60?-79?
 * Complete the dungeon for prior levels plus Otomai's Arch to obtain a Goulo the Terrible Relic.

Levels 80?-99?
 * Complete each of the dungeons for all prior levels plus Bherb's Gully to obtain a Greater Bherb Relic.

Levels 100?-119?:
 * Complete each of the dungeons for all prior levels plus the Tynril Lab to obtain a Tynril Relic.

Levels 120?-200:
 * Complete each of the dungeons for all prior levels plus Hidden Lab to obtain a Kimbo Relic.

Note: Level requierments are taken from Change your constitution, wich are not entirely accurate.