Hello,
I just found few days ago that Inner Focus can be used for more than only 1 spell with 100% crit.
First of all, it works ONLY with Greater Heal or Prayer of Healing. Flash Heal is not working I'm afraid.
1. Cast Power Word: Shield to get a haste buff. You can also use Power Infusion or other haste effects, cause you have only 5 secs to cast as many as possible casts with 100% crit.
2. Use Inner Focus. You will get 2 buffs, both named "Inner Focus". One of them gives 100% crit and reduced mana cost on next spell cast (and it works as intended). The 2nd one gives you immunity to dispel, interrupt and silence for 5 secs. But the 2nd buff is somehow bugged and ALSO gives you 100% crit on POH/GH before it expires.
3. Track the 2nd buff with Satrina or WeakAuras and cast as many GHs/POHs as possible, they will all have 100% crit.
4. Enjoy extra healing and Divine Aegis procs.
Tested in on US and EU, worked everywhere. Troll priests can even cast 3x 100% crit POHs before the 2nd buff called Inner Focus expires.
If this is a repost, sorry for that. Searched the forums, but didn't find anything similar.