What would your attacks be?
What are your "QWE" abilities and your "R" ultimate?
What would be your passive?

Passive- Thick padding.
Every 15 seconds Will will change his diaper, reducing the damage taken from the first attack by 10%

Q- Diaper hop.
Will leaps into the air becoming untargetable for 1 second. Upon landing Will deals physical damage to a small area, leaving it poisoned for 3 seconds. Dealing magic damage.

W- Diaper trail.
Will's movement speed increases, As he moves will leaves a poison trail behind him dealing magic damage per second.

E- Changing time
Will diapers one team mate for 5 seconds. The following team mate will be immune to one offensive attack for this duration.

R- Lax Gas. (ultimate)
Wills surrounds an area with Lax Gas dealing large amounts of poison damage over 6 seconds. Enemies effected by the lax gas will continue to leave a diaper trail behind themselves, capable of poisoning their own teammates for a further 3 seconds.