Wow, you have to see the full 40k rules for Sisters Ephrael Stern and Kyganil (aka the Daemonifuge and Pariah) that are about to kick some butt in the Imperium’s name!
Updated June 13th, 2025, by Rob Baer with the latest information and links.
This chick is no joke! Literally, since birth, she was bred to fight and conquer in the name of the Emperor. The truth of the matter is, she would kick all of our butts before afternoon tea.
Her datasheet has been spreading like wildfire, and it’s difficult to track down where it originated from. If you haven’t already seen some of their rules previewed earlier, we’ve got it all for you below from Warhammer Community and more.
Let’s sit down with our crumpets and see how she accomplished such feats of faith and her rules!
GW Reveals Ephrael Stern & The Pariah’s 40k Rules!
Right away, one thing that sets her apart from her other Sisters of Battle is that she’s S4 and T4 (over the normal S3/ T3). Plus, with six wounds and four attacks, she looks more like a Primaris statline than anything!
Oh, and she’ll be slapping like one, too. At S5 -3AP and 2-damage, she can slice right through most power armor, barring an invuln save, and be able to one-shot Intercessors and Hellblasters. If she gets hold of the new two-wound Pteraxii units for the Admech, she’ll really glide through them (they won’t even get an armor save).
Every turn, she’ll also be able to laser blast something with a mortal wound trick that can’t be denied. Daemonifuge just needs a 5+ on 2D6 to deal D3 mortal wounds. If it’s 9 or more, you’ll be doing D6 mortal wounds. Oh, and if you’re going against Chaos, you’ll add +2 to the result of the 2D6.
Moving on to her partner in crime, Kyganil, aka The Pariah
Kyganil is slightly faster, however sits at S3 and T3 as you might expect any Harlequin. While he’s squishier, he’s still got four attacks with weapons that are great for clearing screens.
While this guy might have four attacks, when he piles in to fight, he’s actually getting eight. He’s going to be a whirlwind of papercuts, but the biggest weakness is his strength characteristic.
Where this guy will really earn his keep is with the Mysterious Saviour rule, giving Ephy a 5+++ FNP. Note that he just has to stand next to her, and he doesn’t even take the wounds! That means for players going against these two, your best bet is to kill Kyganil with his measly 6+ armor save before starting work on Ephy.
Sadly, you can’t have either of them be your Warlord. However, they do have a free deepstrike mechanic thanks to Kyganil using the webway.
Now that we’ve gotten a good idea of how they’ll play in-game from earlier official previews, we can fill in the gaps with their massive datasheet.
Ephrael Stern & Kyganil’s Full 10th Edition Datasheet & Rules
Ephrael Stern and Kyganil walk into a battlefield, and things start dying fast. Daemonifuge isn’t your standard two-for-one character deal. This duo hits hard, moves fast, and shrugs off nonsense with a pair of 4+ invulnerable saves. Not bad for two heretic-slaying misfits.
Ephrael brings Sanctity to the fight—a sword that practically screams, “Chaos, come at me!” With Anti-Chaos 2+, she’s carving up corrupted units like she’s got something to prove. Kyganil, meanwhile, does six precision attacks with his blades, slipping damage past bodyguards like it’s personal.
You will want to use Holy Judgement. Stern picks a target within 12″, dares it to pass a Battle-shock test (with a nasty -2 if it’s Chaos), and punishes failure with three mortal wounds. It’s clean, cruel, and automatic if you set it up right.
Then there’s Lone Operative and Deep Strike. Translation: your opponent can’t touch them until it’s too late. And once they’re in, Fights First means they’re chopping before anyone can react.
Oh—and Heroic Intervention? They can do it, even if someone else already did for free. Rule of cool: achieved.
Ephrael Stern Lore: A Hero From Birth
Sister Ephrael Stern, also called the Thrice-Born, was signed up for the Sisters of Battle before she took her first breath. If you think your parents had high expectations, try getting drafted into eternal war before you had a name. Her folks handed her off to the Imperium like it was a family favor. She grew up in the Saint Sabbat Schola Progenium, where she didn’t just survive—she crushed it.
The Arch Drill-abbot noticed. He gave her a glowing review, which landed her with Sister Patricia of the Order of the Holy Seal. From day one, Stern made “average” look lazy. She blew past her peers without breaking stride.
They mocked her behind her back. She swore her Oaths of Adherence on Terra anyway. Because, of course, she did.
She didn’t just join the Order of Our Martyred Lady—she became its golden child. They stationed her on Ophelia VII, hoping for maybe one misstep. No such luck. She rose to Seraphim in three years flat.
That’s decades faster than most. Then she topped it by becoming a Sister Superior. The rest of us? Still figuring out breakfast.
Life as a Sister Superior
They don’t hand out the title of Sister Superior just to be polite. A few months in, Stern got shipped to Parnis. An entire convent from the Orders Pronatus had vanished.
No distress signals. No survivors. Just one sad, abandoned cup of coffee.
Stern followed the clues and sniffed out the truth. The convent didn’t vanish—it got wrecked by a daemon that had no business being loose. She mourned the Sisters, swore revenge, and kept moving.
Everyone thought the dead were done. They weren’t. They just had one last job to finish.
The daemon didn’t stop at murder. It tangled their bodies and minds into an eternal feedback loop of pain. A cruel setup.
One big mistake. In trying to link their suffering, the daemon also linked their faith. And that changed everything.
During a later battle on Parnis, Stern went down hard. Dead, by all accounts. But the 700 fallen Sisters had other plans.
They used that weird psychic connection to drag her back. Not just alive—stronger, faster, sharper.
The rest of the Sisters? Gone. The field was a graveyard. Stern was the only one who walked away. Her sanity didn’t walk with her.
Imprisoned By Her Own Order
The Imperium didn’t buy her story. One survivor? Too neat.
They locked her up in the Convent Prioris for four years. Long enough to poke, prod, and figure out what she was.
They got their answer when a daemon-possessed Sister came for her. The goal? Shut Stern up before she spilled anything useful. That went about as well as you’d expect. Stern killed the daemon with her bare hands. No weapons. No armor. Just fury.
That’s when the Inquisition finally paid attention. Inquisitor Silas Hand showed up to ask questions and get answers straight from the source. He took her with him. The dead Sisters took their shot, too—loading Stern up with their last secrets and a psychic energy boost.
They found the daemon behind it all: Asteroth. Things got ugly. Silas died taking the beast down. Stern? Still breathing. Again. She has a habit of walking away while everyone else doesn’t.
A Wanted Sister:
The Ordo Malleus didn’t just doubt her—they put a bounty on her head. She’s been hunted ever since.
That wasn’t enough trouble, apparently. Ahriman joined the list of enemies after she slipped through his hands. She escaped him by stabbing herself in the heart. Bold move, but it worked. Her body was recovered and buried with honors.
That would’ve been a solid ending. But Ephrael doesn’t stay dead. The 700 fallen Sisters brought her back again. She freed them from the daemon. They returned the favor. Now she carries their power, like it or not. She finally stopped resisting it.
She even took down a Culexus Assassin—something built to snuff out warp energy—by overwhelming it with her own.
Where She is Today
Ephrael Stern was last spotted heading to the Black Library with an Eldar called the Pariah. She used her strange powers to break into the webway. Now she’s showing up across battlefields like bad weather.
Every time she appears, the tide turns, and the Sisters start winning. Coincidence? Not likely. The Ordo isn’t thrilled. They’ve called for her destruction. No trial. No questions. Just erase her.
Some within the Ordo disagree. They think she might be the best thing to happen to humanity since the Primarchs. They just hope she’s on their side.
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