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2. When the tank takes a big hit, ideally, use Lustrate (x2 if needed) - Adlo - Physick as needed. Manual embrace somewhere in there as well (when applicable - remember the Eos problem). Again, understand boss attack speed. For example, T4 Dreadnought will always follow his big hit (4kish pre mitigation) with an autoattack of 1.5k or so, but the tank will not be hit for 4k twice in 2 seconds. If you have no Aetherflow charges up, Aldo - Rouse - Physick (or Adlo again if shield drops) and during the second cast, manual embrace (if using Selene) or Fey Illumination/Whispering Dawn (Eos). It is generally a good idea to have at least 1 charge up within the last 20s of the Aetherflow cd (i.e. don't spend all 3 in the first 40s).