TheChirurgeon: This is an interesting alternate way to approach poison, which used to have poison counters as a Deciduous mechanic
Necropotence (T1, Ext, S, Block) The Skull
It turns out that when you don't have removal you are usually more than happy to blow 20% of your starting life total on getting your hands on some
C-Tier: Could See Some Play Cards: Asylum Visitor, Breya's Apprentice, Mist-Syndicate Naga, Parallel Lives, Zabaz, the Glimmerwasp, Aeve, Progenitor Ooze, Hanweir Militia Captain, Cordial Vampire, Territorial Kavu, Nether Spirit, and Rise and Shine Asylum Visitor likely is the most exciting madness creature from Jumpstart: Historic Horizons and ranks above a lot of the other madness cards because it potentially is playable in non-madness decks, as a weird twist on Dark Confidant that requires you to be hellbent to draw extra cards
Thats an insane rate, especially in mono-brown or big-mana artifact decks
You'd play a turn four 3/3, your opponent would play a turn four 3/3