CardName: Hopeless Eidolon
Cost: B
Type: Enchantment Creature - Spirit Horror
Pow/Tgh: 1/1
Rules Text: Bestow {3}{B} (If you cast this card for its bestow cost,
it's an Aura spell with enchant creature. It becomes a
creature again if it's not attached to a creature.)
Infect
Enchanted creature gets +1/+1 and infect.
Flavour Text:
Set/Rarity: Multiverse Design Challenge None
Hopeless Eidolon
Enchantment Creature – Spirit Horror
Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Infect
Enchanted creature gets +1/+1 and infect.
See Challenge # 155 and Hopeful Eidolon.
Bestow+Infect seemed like the obvious god/phyrexian mashup.
I don't know if both those mechanics would return in exactly that form, but presumably something like this.