mtg commander deck maker MTG: Duskmourn I Built the Deck Builder

You can start running out of life really quickly, so include lots of lifegain with cards like Whip of Erebos

Then you can add more and more to keep them tapped with her proliferate

Rogues and Pirates can make great use of this enchantment (they can go wide with small creatures), but Merfolk is probably the best fit

That said, we did benefit from the matchups we ran into, at least to some extent, beating Simic Ramp, Dimir Mill, White Weenie, and Izzet Phoenix, while losing our one match to Temur Reclamation (in a match that didn't feel especially close)

None of these are terribly exciting, but they all at least have some amount of use - particularly Dross Skullbomb doing a decent Blood Fountain impression