Oskar, Rubbish Reclaimer Im a sucker for cost reduction in the command zone because it often means you have access to your commander more consistently than players who need to pay the full for each recast, so Oskar, Rubbish Reclaimer caught my eye
3 Bloodroot Apothecary Poisonous Tokens Bloodroot Apothecary is a new way to give opponents poison counters, turning any sacrifice of a noncreature token into two poison counters on them
Canon Foreigner: Number XX: Utopic Dark Infinity is this with it being a Utopia monster not used by Yuma and debuting in the ARC-V manga, not connected to the main Number series, and exclusive to the manga has its rank moved to the right side instead of the usual left
The 1 Star Seraph Scepter and 2 Star Seraph Sovereignty could then be used to Xyz Summon Rank 4 monster such as Number 16: Shock Master or Stellarknight Delteros
On the other hand, Vastwood Fortification might be the single least powerful of all the MDFCs for the Commander format