Brought in Profane Command for flexibility, with the ability to target multiple creatures with Horobi, or go direct for an opponent's life. All Is Dust for removing problem permanents. Endbringer as another colourless creature, blocker and creature with Horobi synergy. Sadistic Sacrament as anti-combo tech, Infernal Darkness as additional soft lock, and Demon of Dark Schemes as an alternative to Reiver Demon.

Dropped Mutilate but kept Toxic Deluge. Dropped Reiver Demon (high casting cost and doesn't hit black or artifact creatures). Dropped Contagion as we have enough removal options. Also dropped Mogis's Marauder as it's cute but felt like the least crucial of our creatures.

I have been testing Power Matrix in my Horobi and it has been impactful everytime I have played it. In one game I was able to win a three-person pod with the Trample it provides.