Sylvan Scrying cant get your Cabal Coffers with a mono-black commander, for example, though Map is still overall more expensive to cast and activate
Even that doesn't see play now
Sieges can be attacked and damaged by any player who is not the protector, including the controller of the battle itself
One defining element of the Commander format is that decks can only contain cards within their commander's color identity, making commanders of three or more colors quite popular
On one hand, it has a built-in protection ability with shroud
After Nash and Marin had their memories restored, the Barian Emperors gained the ability to use "Rank-Up-Magic - The Seventh One", allowing them to easily Summon their ace cards directly from the Extra Deck or Graveyard