Originally Posted by
Effreet
Firstly, Prydaz is better than Cloak of Fel Flames. It is usually 25% of your healing in raids or mythic+s.
Secondly, yes DD: Immortality is very worth it. Whoever you were watching is misinformed. Armor albeit hard to come by is very much one of the better things to go for stat wise regarding survivability.
I would suggest DD: Immortality and either the Parjesh, the EoC or the Raven's Idol. EoC will give you slightly more parry, Parjesh's can be good if you are less geared and Raven Idol if you need more Stam or mastery. This is strictly for survivability though.
I'd suggest hunting for a Bloodthirsty Instinct or Majordomo's Dinner Bell though.