Bard only gets 1 additional weapon damage by putting +1 on relic. Tanks just need to hold agro and adding a % to their damage may not matter much. These could *DEBATABLY* be exceptions to the "always buy relic+1 first" rule.

Personally as a warrior I bought Relic+1 as soon as possible. And I haven't regretted it. Needed all the agro I could for turn4 coil.

For everyone else, the weapon damage does a lot for your heal amount or damage amount. Conventional wisdom = buy relic+1 first.