Am I the only one who thinks that recasting corruption for deaths embrace and getting a dps gain out of it requires the luck of the irish?
Devious minds rolls on corruption, thus you will want to max out crit during the first devious minds proc. From this it follows that prepotting doesnt seem to be an option since you would end up without the 5% crit from the potion roughly 72-85% of the time. That however means since you wont have prepotted but waited for the first devious minds procc to use it, that it will be on cd when getting into death's embrace range. So recasting corruption below 35% you will definititely loose these 5% crit. Of course 12% damage increase > 5% more crit, but I am only getting started:
Devious minds still rolls on corruption, meaning you cant recast corruption at 35% but have to wait for the first procc after. This reduces the gain further since you will only profit from the 12% extra damage for roughly 0.35*(fight time) - average devious minds procc time.
Furthermore you have to factor in the cast time wasted to recast corruption, which could otherwise be spend casting other spells. This is roughly 3 seconds, since you have to cast SoC first in order to be sure to avoid the "stronger spell on target" problem.
But most importantly: TotT rolls on corruption. Recasting it during deaths embrace means that you have to be in 20 yard range of your favorite rogue and that it has to be off cd when devious minds proccs. Roughly 66-75% of the time this will not be the case.
If you do the very rough approximation of treating 1% crit = 1% damage increase, assume that everything works perfectly and only consider the first and last point your expectation value will already be (12%-5%)*(0.33)+(12%-5%-15%)*0.66=-2.97%, i.e. on average you would do 3% less damage during the last 35% of boss health if you recast corruption.
Everything here was of course done under the assumption that NMIC is off cd again when you hit deaths embrace range.