Dudunsparces Run Away Draw is a powerful draw effect that also removes Dudunsparce from play by shuffling it and everything attached to it back into your deck
Heartmender: wow, that is one awesome card
You do still have to pay the mana to cast the Vehicle or artifact creature you exile, but since there's no mana needed to be used for Sanwell's effect in the first place, you should have access to however much mana you need
In addition to the four legendary creature "face" cards from Kamigawa: Neon Dynasty Commander decks, you can find eight more new-to- Magic Commander cards that aren't found in those Commander decks
Honorable Mention: Heliod, Sun-Crowned - it's the best possible mono-white commander in my opinion, even though it will be obvious that the deck will definitely have the game ending Heliod, Sun-Crowned + Walking Ballista or Heliod, Sun-Crowned + Triskelion combo