Skullclamp works best in decks that make expendable X/1 creature tokens of all types, which certainly includes most Goblin tribal decks
Oh and I guess there's one more change
Best Selesnya Token Commanders (Rhys the Redeemed, Trostani Discordant, and Emmara, Soul of the Accord) Selesnya was really the first optimized selection of colors for token decks in Commander (then EDH), and credit for that falls squarely on Rhys the Redeemed
Don't forget that Shadow's damage can trigger on every opponent each turn, further punishing players who favor instant speed spells
Hydroponics Architect is a card we will keep an eye on due to its unique interaction with Daze, but so far it seems in line with all the other unfair things you can do in the format
Also, if they aggressively put Kaido in the board their dons are destroyed and cannot recover