Talk:Vel'Koz/@comment-24191440-20151023060238/@comment-5955640-20151026190705

Slows do not stack so Rylai's is only good on W and E where there is no slow and it will override the slow on the ult. The Q will maintain it's slow and override Rylai's slow effect.

If you want health and AP buy Liandries' torment.

Luden's Echo is fine. Generally speaking Vel'koz has an easy way of dealing a large amount of damage that you don't need a lot of high AP items. In fact all you need is mana and CDR and you do all the damage you'll need. A Void Staff never hurts though and buying multiple AP movement speed items does help in his lack of mobility.