The best grixis commanders that focus on Treasure and pirates are Admiral Brass, Unsinkable, and Admiral Becket Brass
Bring your current Standard-legal deck and ensure all cards are from legal setsthe format rotates annually, so double-check recent rotation changes
Mass Diminish and Polymorphists Jest can give us a distinct combat advantage, enabling our colorless 2/2s to outclass another players battlefield
(There is psychological value to countering an opposing spell with a Force Spike since they are so easy to play around, yet it's not worth playing around them in Commander because they aren't heavily played, which makes getting your powerful spell hit by Jwari Disruption especially devastating.) As for the rest of the bunch, Silundi Vision is listed as an often play just because you need to be a reasonably spell-heavy deck for it to work
Straight up Wrath of God is already an upgrade, but we can also play around with Harsh Mercy (to spare our Phyrexians), Organic Extinction (to spare our artifact creatures), Hour of Reckoning (to spare our tokens) or Austere Command (so we can decide what to spare in the moment)
Combining these with wheels can make for an aggressive draw deck
