If thunder ticks on something AF will last longer, Thundercloud will insta add some seconds
or
Scathe will add to AF timer
or
simple and boring increase AF timer
or
change surecast to: you may cast while running for 15 Seconds. has cruel long cooldown.

As it is now Thunder spells need some overhaul. Right now i only use it for opener, when i derped my main rota and have to use 2.0 rota or have spare time left after B3.

oh and please make Enochian refresh always fully refresh duration.