Changed the Brainstorms for Accumulated Knowledge, seems to be working fine in MWS. 

First of all, I want to say I haven't played for years now and I'm not familiar with the banned and restricted list now a days, though I have researched some, so if you people could kindly point me out which cards are banned/restricted of the following deck I'd be very thankful.  Second, I'd like some help with the sideboard which I can't just figure out.  

Lands:
Island 13
Mountain 2
Shivan Reef 4
Reflecting Pool 4

Spells:
Accumulated Knowledge 4
Counterspell 4
Mana Drain 1
Telling Time 3
Cryptic Command 4
Curiosity 4
Force of Will 4
Force Spike 3
Mana Leak 4
Forbid 3
 
Creatures:
Niv-Mizzet, the Firemind 4

Sideboard: (I haven't figured it out yet)

Arcane Laboratory
Damping Engine
Propaganda
Capsize
Stifle
Back to Basics
Rewind

I do think the Niv-Mizzet and Curiosity combo is lame, but I'm only aming for competitive play, plus I love counterspells.

All help is very welcomed!