The fact that sadis could infect entire teams with literally no effort at all was the only broken aspect. The fact that they can no longer damage infected enemies after 3 hits is the bullshit. There's no differentiation between a weak ass 3ap spell and 5ap dank af spell for e.g.
Would have been way better to limit the duration of infected to 1, to limit the casts of infecting spells, limit non-los, etc. Or even add in an effect along the lines of "Infected enemies take 50% of dmg."
Even with this update, you could just run a pure mp red (220+/1k agi) and a full str sadi Just infect entire team turn 1, turn 2 you just use soothing + para = -9mp per monster, then use aggressive x2 = easy 2-3k dmg per monster. Repeat (you'll just have to use contamination to keep all infected). After like 3 turn, you have enough trees out to just spam force of nature x2 for 5k dmg.
OR everyone that has sadis, just change entire army to str. With class boots. https://www.dofusplanner.com/swMDn/edit/ (relatively cheap/optimized. can remove cloudy for -20% dmg).
x8 str sadis (baring in mind manifold doesn't dmg allies anymore) = 11,700 - 14,900. (With 6ap per char). You can throw in a catseye bow per enemy, or whatever else u want. OR just run 9/4 sadis.