Outside of those specific decks, Murder is always going to be the best choice for slaying others because its an instant and has no targeting restrictions
I love that this can be your opponent losing life, or just yourself losing life as well
Unlike other theft decks, it is really hard to prevent Tergrid from stealing your stuff, as they aren't safe in your hand or on your board, and thanks to other Mill and reanimation effects in Black, they probably aren't safe in your library or graveyard either
Arahbo, Roar of the World held fast as the face commander, letting you cast a free, Cat-specific Giant Growth once per turn
Trap Dustshoot is one of the most brutal ways of keeping up card advantage
Whether youre trying to pull off an infinite with Matoya or just getting a ton of value in a Scry or Surveil deck, this card grants obscene payoffs to commonly played cards