I found those version a little bit too janky and all in on the combo, so I made my version mostly black with a splash of blue in a way that would allow you to play the Death Baron along with a bunch of skeletons that can be brought back from the grave to trigger the Desecrated Tomb so you can have a decent presence on the board instead of just praying you get the combo pieces you need while you hold back. Desecrated Tomb sort of replaces Diligent Excavator for me. Infinite bats ftw! I only have 1 copy of the Diligent Excavator in the sideboard (which I can access with Mastermind's Acquisition) if it happens to be the only missing piece, because otherwise it's pretty useless outside of the combo itself. I also have 1 of each combo pieces in the sideboard to keep them safe from an Unmoored Ego, just in case.
Once Arcane Adaptation is on the board and makes everything a zombie, some fun interactions can happen:
-Every bat is a zombie, so they can get +1+1 death touch from the Death Baron.
-Chamber Sentry can also get death touch so using 1 of its counters to deal 1 damage to a creature is lethal.
-Liliana, Untouched By Death's +1 is much easier to hit.
You do have to be careful not to screw yourself on the combo by still having a Death Baron on the board when you try to go off because he would prevent the Chamber Sentry from dying, that's why keeping some Vicious Offering in hand can be a good idea.
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