This thing from Rise of the Eldrazi (2010) is an interesting card, but probably not very usable
Barring Moltres, the one card my deck needed to be great and a card you dont get until the end of the game
Well, I like to just pick the card back up (likely from the graveyard) and just keep on re-triggering the ability till my opponents buy what Garys selling
This means black and white mana each have a staple board wipe for Commander, but an Orzhov deck can combine them with the elegant card Damn
I looked at the other mono-white options for a soul sisters commander, and Darien, King of Kjeldor or Rune-Tail, Kitsune Ascendant seemed like the best options back then
The one I believe is most used in terms of every card printed is the coin flip