I love Swain.
Except one thing.
His Q DoT is suuuuper slow. It procs one time every second with the first tick of damage taking place immediately.
During the time between the first two ticks, often enemies walk right out of range. Would it be too much to ask if instead of ticking every second, the damage ticked every half second or quarter second? This would significantly smooth out the ability and actually make it feel much cleaner as a damage over time rather than two or three bigger ticks.