In particular Fiddlesticks is one of my favorite AP champs with massive party and solo abilities he is by far one of the best mid champs. With that said this build is slow at first, but by mid and end game Fiddles is extremely powerful and your opponents will be wondering where all their health went. It's not a party until Fiddles Crow Storms, Silences, Fears and Drains everyone.

PROS:
Very powerful mid and end game
Very useful mid-lane ganker
Very good in team fights

CONS:
Squishy in beginning of the game
Not useful build for top or bot
Weak against champs with lots of stuns or silence

Fiddles is a team player :D . He is very useful for top or bottom ganking when either lane is being pressured. He also is very powerful and can decimate the your enemies with a well placed Crow Storm. On that Crow Storm can teleport your through solid walls and is good for when the enemy is pressuring a tower porting through the wall and casting fear will cause them to take heavy damage then drain will finish them off.