But in general, I would encourage you to be greedier here than you would be in other sets, so long as you have your solid core of early blockers to stall the board
Ramp is also more important if youre playing casual Commander because youll likely have big expensive spells you want to cast as opposed to faster formats where the mana curve tops off at a lower number
Theres not a hard number that makes you safe in the matchup, but hoping two Chalice of the Void in your sideboard does the job isnt it
Sagas are a fun card type to play with Muldrotha as well, since you can almost immediately recycle them
Only producing mana for cards with flashback that are in your graveyard is crazy narrow, and means the Altar doesnt even work with any other graveyard mechanics
Multiplayer games give cards time to generate value, which is why things like taxes, board wipes, and long-term engines shine there