Iobel circles the house, guessing layout based on how people are clustered and plotting a course in so she can sneak up the stairs. If she's lucky there will be a ladder or a climbable trellis or something.
There are neither of those things, unfortunately - but she can find at least one set of stairs through the walls by looking at how people move. While there are what look to be servant passages for out of the way deliveries, they might be too cramped for comfort if someone else is in them. The main hallways have guards in them, but at least Iobel would have the ability to go around them if they are walking towards her.
Up the stairs she goes.
She charges it the rest of the way and nabs him.
She sidesteps into another room on the same floor, looking through the wall in case anyone approaches who might be another spellbinder. She charges another knockout.
There's three of them; Iobel could get them all, but it's probably safer for her to quietly stalk them while they try to drag Nataliem through a combat zone and only knock one out if they get farther than the front door. If she sees the raven she wants to get her, too.
The raven is still in the room with Nataliem. She pecks at a window for someone to open it so she can fly away to safety, but the guards are currently busy trying to drag her master out. Fortunate for Iobel, not so much for the raven. She gets to trying to open it herself, struggling a little with a device not built for use with a beak. If Iobel's fast enough, she can manage to knock her out.
Now it's just waiting to see if the fight's going in her side's favor downstairs, and making sure Nataliem isn't dragged completely out of the house.
If Iobel's watching the proceedings through the floor, she can see that Zevros is utterly terrifying in one on one combat. Especially when combined with his brother's spell - it's hard, if perhaps impossible for someone to sneak up on him. Once he knows they're there, he handles them well enough, and leaves several crumpled bodies in his wake. A few of their silhouettes flicker out entirely.
Apparently he doesn't mind leaving some casualties.
Iobel tentatively suspects that she will get to hang on to her last two spells.
The guards with Nataliem are handled. And then, they've won.
Zevros is absurdly pleased with himself.
Iobel picks up a doily, does not incorporate it into her invisibility, and waves it around in the air. "I got the raven, too," she says, "she's upstairs. Does anyone need healing, I have two spells left?"
"Hey, Iobel. Thanks for grabbing the raven - there's a guy downstairs that got some shallow cuts, another who's going to have a massive headache in the morning and will need to be dragged out, and Ari got punched in the face, but other than that - we're all fine."
"Except for the dead, I suppose. Do you want to tie people up before I patch them?"
"... Wha? Oh, no, I was talking about the guys on our side. Loads of the other guys are hurt, fix em if you want, I guess. Tie them up first."
"I'd rather not leave excess corpses if anyone's bleeding out and I could save them, but I don't know how to safely tie up people likely to be hostile."
Edarial has found bandages and is currently using them for a mission called 'let's not have more people die.'
Iobel triages, identifies the two people at the worst risk of death, has Zevros tie them up, and applies healing magic.