The biggest weakness happens when you have a bunch of wizards or warriors in play, but not a full party
Erebos, God of the Dead is basically a card draw engine in this deck, using your lifegain to pay for cards that can close the game
If the game gets to a point where its a bit boring, a new color will definitely shake things up and make things fresh again
Either of these set you in motion for the win, but preferably hold them up until you have the Treasures you need on the field after being super frugal with them or something like Dockside Extortionist or Brass's Bounty in your hand to get tons of Treasures fast
3: Starting Town This lands a banger, especially for faster formats like cEDH or Modern
This is a really good Valiant trigger when you've got enough Mice, and you're likely to in Red-White