Sothera, the Supervoid Ive seen people bemoaning Sothera, the Supervoid as another Grave Pact/Dictate of Erebos-style effect, but I think theres some nuance here
Both commanders are easy to cast, allowing you to take advantage of their effects early on
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
Table of Contents show What Are Cost Reducers in MTG
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)
You can start running out of life really quickly, so include lots of lifegain with cards like Whip of Erebos