Board Thread:Versus Battles/@comment-31165326-20180220215504/@comment-26134263-20180221012847

Nope. If someone tries to spam an ability against Willpower Defense, it wouldn't work. Once you make an attack once, and do it again, it'll stay or do the same amount of damage it did the first time. That means if DIO were to repeatedly attack Linx with power null, his Willpower Defense wouldn't go any more down, so he'd have to use another type of attack.