Proliferating poisons is actually the least interesting thing in the deck: it wins us the game, sure, but the REAL spice is that the deck is loaded with a diverse array of permanents that LOVE getting free counters on them
Betor, Kin to All At first glance, Betor looks like a weird build-around with a toughness theme
Well, ninjutsu is a free ability so you can do it after you cast your spell for the turn
Dark Confidant is what you want
But I believe it wiser than their original idea, Whenever an opponent casts a card with Liliana in its name, transform CARDNAME. I wont pretend to understand all the components that go into designing a planeswalker, but it seemed clear that nailing down solid design space for red planeswalkers did not come easy
Against an unprepared opponent, haste plus trample can easily equal a game over