Nerfs brought to coil :
high voltage (T1-T2) lasts 8 seconds instead of 30 and can be dispelled
Conflags (T5) have less HP
Bouquet (T6) no longer kills you (damage nerfed from 14k to 4k or something)
Petrification (T7) lasts 10 seconds instead of 1 minute, and you no longer die instantly if you get hit in this state

Thses are the only nerfs I can remember on all coil.
IF AS ever get a nerf, the only one I could see besides echo would be a dapage nerf on digitis, maybe ? (I think that's the right ability. Been 3 month since I last entered AS3)