That is a rather interesting install . Is that concrete and did they drill channels ? If that ' s concrete it ' s probably structural . <| sep |> For pokemon Y <| sep |> My stance is It ' s always worth casting when there is damage going out and if there is no damage going out , it really doesn ' t matter at all what you are doing anyway . Efflo uptime , LB uptime , pick your nose , do some disenchanting , who cares if there is no damage anyway But phases of 30 seconds without significant damage during progression are quite rare , I can ' t remember when I last saw that . Raw healing is important to look at , too , not just effective healing . In the worst case it ' s like preHoTing people with Rejuv Sure , they will overheal the first few seconds while the raid is still at full HP , but the point is to have them ticking once the damage spike comes . And I still don ' t quite see how the math would support Efflo not being great . Even with overhealing and ignoring a lot of factors , sure , but they will shift the 17 seconds to 20 seconds to make it worth it , they are not enough to completely disregard it I ' d read your math as It is worth having up 100 % of the time in most situations 3 people in it for ~ 20 seconds . Looking at my last dragons kill for example , arguably one of the worst fights for Efflo because you have very small groups and they move a ton I had 110 casts of Rejuv for 35 . 7 m healing and 16 casts of Efflo for about 10 m healing . That means it was barely , not even 10 %, that is probably eaten by the disregarded factors you described mana efficient to have an almost 100 % Efflo uptime , even on a fight that is very bad for Efflo .