There are a myriad of mill effects in black and blue to make sure that this Horror comes out huge and after its on the table things go from bad to worse
A couple of key options include: Academy Manufactor FEAs , $16 and climbing with plenty of existing EDH demand being expanded upon with the advent of this food deck Boon Reflection , last seen in Double Masters and available near $5 in both foil and non-foil though it could see a reprint in a Secret Lair or Commander Masters this year Rhox Faithmender foils, single printing from 2013, currently near $10 but headed to $20+ if it doesnt catch a reprint Feasting Troll King is a solid threat in this deck if your mana base can support it, and FEAs are single printing, low supply and sitting at about $10
This leads to decks that focus on minimizing the potential drawback to capitalize on all of the value (Like Aristocrat Synergies for example.) There are very few things more detrimental than sacrificing your mana production so the value that these cards give you is insane
Alrund's Epiphany also has foretell, which is a mechanic that allows you to pay two mana to put it into exile and makes it cost only six mana in a later turn
But new listings have been quick to undercut that Market Price, so it may correct down shortly