Ever hear of the one-legged Zombie in the ass-kicking contest?
Well if you have, now you'll have maybe... 10 one-legged Zombies. Or 15. Maybe they'll even come with both legs! (wow!)
Necrotic Overdrive tries to spam oodles of 2/2 Black zombie tokens with lots of tasty effects and spicy enchantments to help your hoard sway the game before you've even entered your combat phase.
Your meat-and-potatoes are Wayward Servant for lifetrade and Lord of the Accursed for general boosts and menace. You'll combo Wayward Servant with Campaign of Vengeance and Anointed Procession. Double your token generation with Anointed Procession, snag some lifetrade with your Wayward Servant, and if you have a sizeable team next turn, play Campaign of Vengeance for MORE lifetrade for everything that attacks!
Super handy to have Anointed Procession out ASAP to double the tons of different methods of getting tokens, like Noosegraf Mob and the incredibly cost-effective Shamble Back. Seriously, exile anything + create a 2/2 token (or two tokens with AP) AND gain 2 life? Also, pitch any card with a Madness cost away with Cryptbreaker and you'll be swimming in partially-decayed, half-animated corpses in no time!
Kill big stuff or planeswalkers with Never and keep an In Oketra's Name handy for hot blocks or even hotter attacks. Throne of the God-Pharaoh is handy for a finisher to slap on some extra damage from attack phases and from using Cryptbreaker or Lord of the Accursed menace boost.
Looking for suggestions / upgrades. Very much focused on the lifetrade potential upon spawning tokens. Also just swinging with a ton of tokens. Considering stuff like From Underneath the Floorboards for Madness effects. Crypt boy might not be incredibly handy but can get rid of unwanted duplicates from drawing, and can even draw MORE cards!