Guys another update here: Last night after mythic dragons of nightmare fight I saw myself as world rank 7th holy priest for that fight. We used no tricks to increase my healing and that was a regular progress fight. I used enduring renewal, binding heal and benediction combo with legendary pants. Renew was active 99 percent of thr time on players "according to logs" and result was amazing.
Most of the ppl who keeps saying "flash heal spam is the only way" are totally wrong for me. On cenarius or dragons Mythic, no flash heal setup can beat this.
https://www.warcraftlogs.com/reports...4&type=healing
If you wanna check out the logs, here is the link.
Oh btw on my second divine hymn I got fear before completing the cast, results could be higher.