User blog comment:Danzyx/Jungle Kassadin?/@comment-74.73.27.88-20130216004302

He is still squishy, not as much as other mids but compared to junglers liek J4 and mundo, he is a pillow filled with jello. Both his single target nuke and AoE cost a lot of mana and have hogh cooldowns makeing you unable to spam them.

People dont use jungle kass because he is squishy, has a slow clear time, very vulnerable to counter jungling, useless without blue buff and cant gank pre 6 with good results.