Read More: Rebalanced Historic MTG Arena Banned Cards For Mirror, Mirror Event Revealed 10 Conduit of Ruin Conduit of Ruin is an enabler
Same reason you can't use Gorz and Trag, or multiple Trags
Nuances to Consider: Play Time, Experience, $$, and Competitiveness Consider | Illustration by Brian Yuen Lets say youre like me
You can take a look at our Mastery article for more info on level progress and level mastery
Make sure to mention this at your Bracket 3 table, and be prepared to swap out Crackdown Construct if the rest of the pod objects
That said, a Sultai commander has the best color identity to support both poison counters and infect creatures, and Xavier is one of the very few populate commanders in Magic