Did you have to limit yourselves at all since you could theoretically just create anything a deck was missing, or did you lean into that freedom
Commander has a ton of powerful ways to generate a bunch of mana, and turning that mana into cards, life, and a Jellyfish Hydra Beast that flies and tramples is pretty much everything you want to be doing in the format
Both of those are positive abilities to help grow her loyalty to your cause, so you don't need to run back and forth between a plus ability you don't want and a minus one you do
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You can create pretty consistent scenarios where you play a room card and unlock the other door: Victor, Valgavoth's Seneschal lets you surveil 2 while your opponents discard a card