unless specifically stated, partner with commanders are legal in most Commander variants
I will say that the Sell-Sword side of this is going to be harder than it looks to get counters on
(Until your next turn, the goaded creatures attack each combat if able and attack a player other than you if able.) Legendary Creature - Spirit Commander (CTRL to add secondary) Creature Red XIII, Proud Warrior Vigilance, trample Other modified creatures you control have vigilance and trample
What's worse, Neverending Torment has zero impact on the board state, requiring you to set all any and all protective measures beforehand
It's a cool ability, which has surely only gotten better over time with all the artifact tokens floating about, but since it's printed on a three mana artifact that does nothing when it hits the board, it's no wonder this card has remained obscure until now
With a wide variety of products, theres something for every type of player