Something like Harnfel, Horn of Bounty can become a one card engine all on its own and can turn bad draws into more fuel for Faldorn
Outside of these environments, Urza can still be quite good, as he generates 2 bodies for 4 mana, provides a mana sink with a powerful payoff when needed, and can even turn things like Equipment and Sapphire Medallions into tools to race ahead of your opponents while still employing their inherent value
(Leads to: Arena, Stash) Trap
If they're drawn first, their low mana cost ensures Aminatou can perform such miracles early and often, making her one of the more powerful commanders in Duskmourn
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Aftermath (Cast this spell only from your graveyard