MTG Salvation

Current draft:



Looking for optimization suggestions.
I've tried Sorin, Vengeful Bloodlord but Seraph proves more useful so far.
I'm not sure about Cavalier of Night, I think 5cmc is too much in a deck that just produces and sacs bodies.
Yarok's Fenlurker is good, but I find other creatures better.
Considered Corpse Knight over Cruel Celebrant... idk. I like how it works with already built boards.

You would probably better off swapping Witch's Oven and Cauldron Familiar out for something like Pitiless Pontiff, Plaguecrafter, or Priest of Forgotten Gods. The combo, with two pieces, is decent, but it needs other combo pieces present to really get rolling. The cat, by itself, is a pretty underwhelming 1-drop, and the oven is, quite frankly, a lousy sac outlet when you're not doing something busted with the food tokens. With only four cards that make food and two cards that use food in a profitable manner, that just doesn't seem enough.

I may test the deck without the main combo, but
1) Mausoleum Secrets finds the Familiar with just 1 creature in the graveyard
2) Spare food gets consumed by the Familiar when it hits the field for a burst of life loss, life gain and even cards. So I need to only draw 1 out of 6 cards to make profit of all the food I can make. It works very consistently.
3) Familiar can still be sac'd to Ayara after chump blocking and brought back later when I draw the Oven. I just play 2 so I don't get flooded with them. Usually 1 is enough, but the other is a solid backup.

Looking at the cards you suggest,
Pitiless Pontiff is good on defense, but can't really help me win the game, which is what Oven + Familiar does while being quite resilient to disruption when online.
Plaguecrafter is again good, but without more removal it will only take out 1-2 drops that don't really matter. 3cmc is already very clogged and the deck needs some early plays.
Priest of Forgotten Gods I've also tried, but same thing as above applies: It rarely hit something good, getting it to activate was tough and I never felt 100% good about it. What would I sac willingly? Ayara? Celebrant? Reaper? Not really.

Is there any card I could bring here to make Oko's life harder?

Found something worth another post.
Bolas's Citadel is a potential insta-win. This deck already has the ability to keep the life high even under pressure. Once the Citadel hits, it's very likely to slam 5+ cards onto the battlefield while dealing some life loss. If you hit a land on the top, Reaper, Ayara and Castle Locthwain can all keep you going. Then The Citadel's sac ability comes in...

Update, so far good results against Oko decks and Esper Dance (roughly even MUs). Mono R is tough pre-board, Gruul is ok.
Destroys other rogue/jank decks.