Building Both Void Staff and Deathcap
When the game goes past three items, I notice that two choices seem better than all others, simply based on pure stats. For a core of
The optimal choice, for an artillery or burst mage facing squishy or softer targets, seems to be
While the 
combo might be good for battle mages, anyone who wants to combo should build the former two items. Scaling penetration helps their base damage get through and increases the value of their AP stack against resistant targets. Scaling AP benefits both their waveclear and damage by making their raw AP even more valuable.
Has anyone found otherwise?
