You're leaning really hard into the cost reduction, but that's a strong enough incentive to consider this 2-mana legend as your commander
2 Cursed Melfolk (Ursulas Handiwork) No Strength, No Problem Not every card in your deck needs to be expensive
Jace, the Mind Sculptor I dont know what it is about Jace, the Mind Sculptor, but something about the incredible power level of this card paired with its long-term seat on the banlist make it such an ominous and powerful card
Other non-wall cards that reward you for having lots of defenders include Axebane Guardian, Wingmantle Chaplain, and Perimeter Captain
In particular, were looking at his second ability, which can draw many (or few) cards, depending on how big your creatures are