cards that you can have any number of mtg Breaking the Singleton Rule in Commander Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats You Can Run Any Number

A Pathed Bob will still accelerate you into a turn 3 Rhino or Lily with discard/Bolt backup (assuming you are playing Jund)

Those are the broad strokes of the changes for this iteration but you can check the changelist below for comments on every new addition

Strago and Relm I love Balustrade Spy but Strago and Relm does better than reveal cards, it straight up exiles them like they had finality counters

Wilhelt, the Rotcleaver Finally, we're going to need a Commander to lead these risen recruits into battle

Any deck that plays a large number of caves is fairly likely to be able to color fix through other means

The best two methods are either a binder or a box