Tarrians Soulcleaver A usually better Blade of the Bloodchief, Tarrian's Soulcleaver will see wide play across a range of the kinds of aristocrats decks helmed by commanders like Elenda, the Dusk Rose, but this also seems like another payoff for treasure decks
Ayara, First of Locthwain Between the mana cost and the restriction on what you can sacrifice, Ayara, First of Locthwain works best in mono-black or near-mono-black lists
Out of nowhere you can flop a Sorin on to a fairly dull and even board and utterly smash any chance of racing right there and then
Although its not terrible to hit a Cultivate and a Farseek when you drop the Wanderer, its not really why you sleeved up the deck
Vivien's -5 can be critical against an Azorius, Bant, or Esper deck where landing a spell can be impossible, except for the anti-counterspell magic of sideboard staple Shifting Ceratops
It doesnt matter how well you play your own game