In taking a look at Sin's EDHREC page, we can see that the two most popular archetypes of Sin's decks are leaning into are lands matter and reanimator
If you are unsure of what to cut and you know you want to bring in a sideboard card or three, Scavenging Ooze can go
The artwork was illustrated by saino misaki
Thanks to the slower nature of Commander, you should have ample time to set the combo up, as well, but it will have a smaller impact on the game thanks to having four opponents
Tactically, the G-Max Wildfire move will allow you to absolutely devastate your opponent, albeit at the expense of a substantial amount of Energy cards
Now, Wizards of the Coast is taking its turn -- for the second time, that is