One copy of Eliminate the Competition allows you to blow up a ton of Devil tokens to straight up kill that many creatures on your opponents board which will at the very least set off the death trigger from each of those tokens, but hopefully you also have a Cutthroat to double up the damage to your opponent and gain you some life
I used to have an EDH deck that used mass land destruction as a win condition
Sure, there are several cards like, Orcish Bowmasters and Mirkwood Bats, that will do work and become staples of the Commander format
Its also just difficult to interact with it completely dodges creature removal, and you cant Counterspell the ninjutsu ability, so the very moment you decide not to block a creature, Kaito, Bane of Nightmares hits the table, and its sticking around at least long enough to use a loyalty ability and pass the turn
Each source material card lists the book and episode that the artwork comes from in the bottom-left corner of the card