Fallen Protectors:
If tanking Rook, using Desecrated Ground will free you to move during Vengeful Strikes, just keep in mind you need to run out of range of his cone attack, because if you run sideways he'll turn to keep facing you. Alternatively, just Death Strike right before he starts, and your shield will absorb most or all of the Vengeful Strike damage.
If tanking He, pop Dancing Rune Weapon when he gets Instant Poison and the next boss to be pushed into Desperate Measures is still far from the %hp threshold. (He's poison buffs get cleared when any boss enters DM phase) The extra par