Quintessence of Light is one of the new Scrappin' Dailies of WOD.
Start with Unborn Val'kyr. Use Shadow Shock twice. Now here's where the strategy starts to align. Pass the third round to keep the Val'kyr alive. From here, use Unholy Ascension. This will amplify damage by 25 % for the rest of the fight. Once your racial has been activated, use her final round for Curse of Doom. On the pet switch, flip into Pandaren Water Spirit. Start with Geyser. On the next round use Whirlpool. If you do it reversed the bombs wont light line up with Chrominius Howl. Once the Spirit is down, flip to Chrominius. With Chrominius up, All the debuffs we've set should all be around 1 round on their timers. So pop Howl. At this point she should have been nuked down to low health and stunned if not dead. From there finish with a grand Surge of Power or an Arcane Explosion and its GG Quintessence.