This wants you to maximize the black pips of your stuff and is great with a very heavy black Commander like Ayara, First of Locthwain
So EDH, I suppose, where this Rakdos demon is cracked
But if it's strategy and silly fun you're after, it's not a bad choice
MTG Lost Caverns of Ixalan Blood Rites Commander Clavileno, First of the Blessed is a highly unusual Vampire Commander, serving Blood Rites unique strategy
Supply // Demand Another Bant split card, this time with an Azorius three cost that tutors for a multicolored card to your hand, and then the Selesnya is an X spell to make X Saproling tokens as a win con
Stain the Mind is the only mono-black, non-restricted Cranial Extraction effect in Pioneer, a format where combo seems to be fairly single-card-centric and not super-redundant