I had a Seat of Sacrifice party just now in DF that went mostly well aside from one hiccup at the start.

At the beginning, Elidibus knocks everyone to low HP and inflicts them with a debuff that instantly kills everyone if they aren't healed to max HP. So at around 6 seconds left on the debuff, I Vercure myself twice upon seeing that the Healers are done healing, followed by both Tanks and a DPS dropping dead seconds later. Thank goodness for Verraise.