mtg snake tribal commander deck for Xyris, the Writhing Storm -

The Superlatorium (acorn) Artifact Attraction Visit An opponent chooses "the fastest," "the scariest," or "the weakest." You choose a creature, then ask a person outside the game to choose the creature that best fits the chosen criteria

Though not every zombie commander cares about zombiesfor example, Nekusar, the Mindrazer and Belbe, Corrupted Observer dont care about the rest of your deck being zombiesthey can all benefit from typal support cards like Accursed Duneyard and Cavern of Souls

Lieutenant Kirtar No haste required, and a relatively cheap rattlesnake commander

The cycle continues, allowing Korvold, Fae-Cursed King to do everything you want in a Sacrifice deck and more.