Deathcap on AP Teemo as a second item?

Ok trying some math. there are only two types of champion MR, flat 30 or scaling 32-54

on the first type, liandries will get their damage reduction to 14 % liandries + void will get it to 5 % On the second type it will get them (at level 18) to 28% and 17%.

SO the answer is: get Void Staff over Deathcap, when that missing AP makes less than 10% of your damage.

Deathcap will give you 220 instead of 120 AP, meaning Q at full stacks goes from 360 to 440 damage (19%) and E goes from 56 per hit to 116 per hit (52%) and from 120 + 212 per dot (43%)

get

The only point where Voidstaff is better is level 3 shrooms.

I guess this goes for all champs, if you have high base and low ratio get Penetration. If you have low base and high ratio, get AP.

I figured Void would always be better than cap since teemo's ratios aren't that good but his mushrooms have crazy base damage. I found some math on it here http://www.lolking.net/guides/276950

death cap probably, bigger number damage, void staff good once they start stacking, either way most carries wont get alot of MR.

you can try lichbane first on teemo, it works quite well with an auto q auto for poke and makes him faster.

Lich first on teemo is bad. Needs ap before he buys lich.

I like to go Haunting Guise/Sorcs into Nashors, then Rabadon, i usually finish Liandries later in the game as it doesn't give that much for it's cost - just my 2 shrooms :D

I never really understood why people get nashors on teemo. You shouldn't even be staying in AA range long enough to get more than one or two AA's off (aa > q > aa) unless you're going bruiser teemo since you actually build tanky items. it's such a bad item for him lol