Believe will also be great if your deck has a mix of enchantment and aristocrats strategies, although thats more Orzhov turf than Dimir
Red has access to plenty of mass artifact destruction spells, like Shatterstorm or Brotherhood's End, but being able to break symmetry on an effect like this is a huge boon in Commander games, since it doesn't punish you for running out your own artifacts early and often.
Artifact Wizard's Spellbook : Exile target instant or sorcery card from a graveyard
Selvala, Heart of the Wilds Selvala, Heart of the Wilds activated ability is a good source of both ramp and mana fixing, even on its own
Generating extra bodies that you want to sacrifice for additional value for that bargain cost shouldn't be very hard in this color
I removed the following cards to make room for these upgrades: Darksteel Ingot Culling Ritual Cunning Rhetoric Baleful Mastery Cazur, Ruthless Stalker Cold-Eyed Selkie Oblivion Sower FURTHER UPGRADES If youre looking to go beyond a $50 investment, there are some other cards you should consider adding