Creeping Doom - Instead of Minions. Free.
Reasonable - Instead of Marked. Free.
Takes One To Know One - Extra.
Genki Girl - Bought with Bane. (intended for Deni only)
Retrieval - Bought with Mind-Bent.
Magical Overload - Came with ally-perk, but left here for signification.

Quick-Tempered - Free.
Insomnia - Free.
Bane - Bought with Genki Girl.
Mind-Bent - Bought with Retrieval.
Monstrous Form - Came with ally-perk, but left here for signification.

(creeping doom, reasonable and quick-tempered are already written on Asengav, as is the in-depth description of what being "amorphous harpies" actually entails)

Patron Benefits:
Takes One To Know One - There are two parts of Asengav’s power. The portals and the darkness. Deni and Eli are literally dripping with the darkness to their cores, and this has consequences. They feel the same energy if exposed to it in others. This allows Deni and Eli to see through the disguises of monsters and detect Horror champions should they touch or meet eye-to-eye. If they have a bane, they also get a rough idea of what it might be.
Genki Girl - Deni only. As Mariette’s scout, Deni’s filled with insurmountable amounts of energy and fortunately finds stealth-missions fun, and she can stalk targets for days upon end without getting tired or bored. It does mean that not actually doing anything engaging bores her extremely fast, now, but that was sincerely always the case. She’ll also never get tired mid-battle.
Retrieval - As with Mariette, should any of the two of them end up in mortal danger and it has the time to spare, Asengav might reach out through a portal and save them. Might. It’s a multidimensional being with plenty of other things on its mind. Saving underlings is significantly less important than saving champions. If they’re lucky, with other words.
Magical Overload - They’re amorphous harpies.

Patron Drawbacks:
Insomnia - With a horror as their patron, neither of the two monster girls have an easy time falling asleep. Something’s always clawing at their minds, whispering horrendous nothings, giving them terrible dreams when they do fall asleep. Neither of the two seems to ever want to go to sleep, staying up playing games or stalking targets outside, and this is a large part of that. But eventually, they have to…
Mind-Bent - Deni and Eli are both as mind-manipulated as Mariette. They think they’re following Mariette out of their own free will, but they’re really not. Their minds have a compulsion to follow Asengav and their current leader, Mariette, and although they can disagree with commands they can never even consider going against the cause. Any notion of such will send a pang of pain through their heads, punishing them for even thinking the thought. Should they ever fall out of favour with their horror overlord, they’ll find themselves quivering wrecks huddling forever in fear unless someone bends their minds back.
Bane - While Mariette is affected by both lit wax candles and cracked mirrors, Deni and Eli are more or less immune to the cracked mirrors. This is because they have no portal or dimension-travelling abilities of their own, which the cracked mirror bane is linked to. However, a lit wax candle is the bane of the darkness of Asengav, which Deni and Eli are the personifications of. The slightest light of such a candle or the smell of wax in their noses will cause burning pain, forcing them to flee. Being locked inside a room with lit wax candles will burn them alive and cause their amorphous bodies to melt. A much more extreme reaction than that which Mariette experiences.
Monstrous Form - They’re amorphous harpies.

I don’t think allies were supposed to have patron bonuses. Because, if it’s like this, I could say that I picked Deni & Eli to be the “more experienced magical girl” option and then just have them take the monster girl benefit/drawback, and then I have the exact same girl(s) but with two silvers and three bronze coins to spend on stats. Which isn’t fair, so I’m not going to. But, really.