This clever loop puts Ashes of the Abhorrent in a fascinating position, as its graveyard restriction is entirely bypassed when Mortuary neatly redirects your sacrificed creature straight back to the top of your library instead of letting it sit in the graveyard. With Gwenom, Remorseless already having granted you the ability to play cards from the top of your library while paying life instead of mana costs, you can instantly recast Blood Pet after each sacrifice. Meanwhile, Ashes of the Abhorrent quietly turns every iteration of this cycle into a positive life gain trigger to offset the mana value payment, letting you endlessly churn through your deck for infinite black mana, death triggers, and storm count.