Having instants to flash back with Toshiro that arent just spot removal is important. Moonlight Bargain and Wretched Confluence are a little bit pricy in terms of CMC, but they can do a lot of work, and have uses outside of killing your opponents dudes.

I used them before however in some games they didnt help me out when I needed some kill spells. There's a chance they may go back in but for now going to wait and see the other dominaria spoilers before I update the deck again

All you have to do to make this commander legal is replace these cards: Dark Bargain, Yawgmoth's Vile Offering, And Cabal Stronghold With cards suggested to you.

Jacka2813, mtg_artifacts Usually new cards during spoiler season are always not legal until the set is released