Ragefire TLP TSS era, 2019, for a 75 raid shaman with max gear & AA:
This gives you a nine hour buff that increases your mana regen by six per tick and seems to stack with absolutely everything. There's also +20% to Dodge which may or may not stack with other stuff like Dodge IV, I don't know, I'm not a parser, I just like mana regen buffs that last nine hours. Get this **** and live high on the hog. $$