finally made a deck to win with battle of wits in commander

How is it possible? With the Eldrazi big dude fetching more Eldrazi from outside the game?

Officially in Commander the sideboard does not exist, and it's up to the play group whether to allow access to it as a house rule.

And in general a 100+ card sideboard is going to be a hard sell

100+ sounds perfect for the players with 1k+ deck sizes :P

The Commander format requires that decks are exactly 100 cards

Winning with Battle of Wits requires 200 cards in the library, so you need to add over 100 cards to your 100 card deck to make that work.

pfft, just had to say that with the recent post about someone having a deck with 1300 unique cards :P