User blog comment:Bashfrog/Sion Invisibility Syndrome/@comment-4652200-20130728231442/@comment-4434378-20130729173031

I get that for some reason people want AP Sion to work in the jungle. But that build just isn't going to accomplish want you want. Gunblade and RoA are both very subpar items for AP Sion, who really just wants straight AP and some resists, and a LichBane at some point. There is no reason to get an HP sustain item when you have Shield on AP Sion.

The problem with AP Sion in the jungle, is you don't get enough gold to really start snowballing, so you just fall off immediately and can never really recover. If you aren't ahead = weak shield = no damage.