Quick LI's Guide
(by Pokimon)

1. lvl 85 + LIs give best return in relics
   
2. If you are after specific lvl 100 Legacies, then 96+
3. Always lvl "junk" LIs to xp lvl 60 before decon
4. Never decon lvl 0 LI for single tier 1 relic.
5. Tier 1-4 relics, forge into tier 5 and refine for shards
6. Tier 7+ relics use to forge relics you will use
7. Ttier 6 may also be used to forge higher tier relics, but forge these only as needed.
   

          Relic forging can get very expensive

ps: These guidelines are subject to change as game mecanics change.

PPs: This method was last formally tested 2 years ago by me. Please let me know if you feel part is outdated.