Dankirk

I like the creative use of Mercy Killing here and also turning Curse of the Swine and Hunted Phatasms drawbacks to upsides.

Graveyard hate could be main deckable here, since any spells / dying permanents from Knowledge Pool still go to their owners graveyards. Something like Soul-Guide Lantern that still cantrips if not needed.

Another thing is creatures or other permanents with activatable abilities with somewhat restrictive colored activation cost. So basically it would be hard for opponent to utilize them fully, but you could. Something like Onyx Mage, Knighted Myr, Lion Sash or some keyrunes. This however most likely needs another color besides blue.

Then there's the removal pieces that can't target specific stuff you happen to be playing. Like Go for the Throat, since you are playing artifacts. Doesn't really work if you are casting their creatures that are non-artifacts, but in limited cases could be worth it.

I was thinking about recurring a bit and settled with Naya Charm, since it's other modes are also relevant. Sword of the Realms also has the secondary effect to get back killed creatures.

I'm not sure the copies help here that much. I'd much rather either tutor for more, or well use Naya Charm to return them. That way I don't have too many situation dependent cards on my hands. Copying opponents stuff could be fun though, since the equipment/auras make them better than the originals.

Looks great, but I don't see Ajani being all that useful. Considering all your creatures are 2 cmc, how about Immortal Servitude ? Or just more removal like Doomskar or perhaps Rite of Oblivion ?

Made some changes to lower the need for mana and also some more madness effects.

-2x Desecration Demon
-4x Grim Discovery
-3x Mutilate
-1x Oona's Prowler

+1x Gatekeeper of Malakir
+1x Cry of Contrition
+4x Call to the Netherworld
+2x Scourge of Nel Toth
+2x Murderous Compulsion

I feel like this could use something more against flying besides Deadly Recluse. Sporeweb Weaver could work great with Trove of Temptation.

Maybe something like 2x Smoldering Egg, since it's ~ $2 a piece. A 0/4 for 2 that turns into a (flying) threat after a few instants/sorceries. Works great with X spells too.

Added Dragonskull Summits, since it's still under $50. Might maybe buy this as a budget deck without them though.

Hell Mongrel does indeed seem like a card that should be in a budget, entry level deck about madness. The current curve makes the 3/4 cmc somewhat problematic though. Might need to cut back on the "opponent discards" theme to fit him in proper.

Thanks for the ideas.

I'm glad you see my decks as such. This being your own recommendation list, I do believe you can add anyone you want there without asking, me included, if you so desire. I will be making decks I find interesting or inspired by every now and then. Decks competitiveness will vary, since most are planned fun and theme first, but I will make an effort to leave as few weak spots as possible.

Just take care of yourself too, not to get exhausted and consumed by all this effort you are putting in. They say fire is a good servant, and a bad master. Same goes for all online communities. Let trolls be trolls, and what not. Best one can do is lead by example, not by whip.

[[Revival//Revege]] could be a win condition with Vito. It can also bring Vito back from the graveyard.
Other option would be [[Patriarch's Bidding]], triggering ETBs and maybe giving enough clerics for Ancestor's Prophet

This seems nice and budget friendly. I might suggest a few creatures that can search for the enchantments/auras. Heliod's Pilgrim or Moon-Blessed Cleric. The former only fetch auras, so it could be useful if Journey to Nowhere replaced with an aura too, like Pacifism.

Is Imposing Sovereign really important here? How about one of these instead:
Knight of White Orchid, True Believer/Aegis of the Gods, Dauntless Bodyguard or Meddling Mage
All are human with 2 power and 2 cmc. Then there's also Snapca$ter.

Some further changes.
Mana Leaks were not performing well in late game, so switched them for some hard counters, Countersqualls and Muddle the Mixtures, latter of which can also fetch key components of the deck.

Due to number of non-creature discards and counters, decided to drop a Duress for an Isochron Scepter. As one-of and with "just" 11 instants, it's not part of the main plan, but if drawn (or fetched with Mixture), it helps seal the late game better than any single spell.

Everflowing Chalice instead of Cornucopia?
Did something quite similiar back then: https://www.mtgvault.com/dankirk/decks/charge-up/

Plague of Vermins could combo with Ayara and it does make other rats bigger, though that might put in the "win-more" category.

I agree about it's mana cost though. Something like Priest of the Forgotten Gods could fix that.

I concur about the big creatures, 10 might be a bit too many.
Reassembling Skeleton would go well in main board and make sure you don't run out of sacrifice targets.

I feel like some draw could be useful.
Considering the bounce effects keep opponents hands relatively full vs yours, something like Jace's Archivist could work. It would also help getting rid of creatures with strong ETBs, that you don't normally want to bounce.

Other option would be some draw equipment/auras on unblockables, but I feel that's kind of moot, since you are already doing fine if you have an unblockable with Sigil or Invoocation. Would rather play draw independently to get that combo.

Certainly. Didn't think of it, since it's usually used for the search which wasn't necessay with Petitioners. The only con is that it doesn't cantrip, but it's worth testing out.

Stream of Thought is interesting. I'm worried about game flow though, since it doesn't replenish my hand like Thought Scour or Careful Study does. Nevertheless it's good candidate for making the deck modern legal (by dropping Careful Study).

Mesmeric is quite dangerous with narrow win conditions, so Stream of Thought would be quite useful with it.

With Treasure Hunt I think I would rather drop the petitioners and go full ~50 lands plus the win conditions, hehe.

True, but only as the finishing move. Oracle or Maniac should only be cast when they win the game, by which time I will have drawn most of the 11 lands.

Tried with Petitioners in another deck: https://www.mtgvault.com/dankirk/decks/petitioner-deep-dive/
The primary plan there was not to hard cast the petitioners (altough possible), but use other 1cmc cards to get them to graveyard. Careful Study is really good at that, but also not modern legal.

For hard casting petitioners I would need a bigger land base, but at the same time I can't afford to exile apostles/petitioners only to draw 4 lands the following turns.

It might. However, I wanted to keep the initial cmcs really low, so I can manage with such stunted mana base. (you can manage with 1 mana). Reason being it helps getting useful draws once Apostles are eliminated.

Still could try making a version with Petitioners.