User blog comment:Shigfugjum/Another Vel'koz Blog/@comment-10657048-20140311070432/@comment-6000413-20140312101539

You still get 35% CDR with masteries and blue pot or blue, getting 2 20% items is overkill.

RoA gives you good AP and some health to survieve the initial burst. Liandry increases damage more than pure AP, IMHO, but I should run calculations. What you need to look at are not just the AP ratios, but the ratios compared to the base damage.

Q has 240 (+ 60% AP), which is a good ratio. W has 275 (+ 62.5% AP). which is meh, E 190 (+ 50% AP)   you don't really use for damage, but the ratio is good. R il 900 (+ 60% AP), that's really awful.

Considering this I would build chalice and full ap for the first items, but get good penetration and health mid-game, when the ulti becomes game-changing. chalice -> boots->deathcap -> Guise->RoA -> Void -> Liandry