After completing the A Blade In The Dark quest in Skyrim, you will meet with Delphine to plan an infiltration of the Thalmor Embassy, thus starting the Diplomatic Immunity quest. When you get inside the embassy, pretending to be a party guest, you'll need to distract the other visitors to sneak out unnoticed to collect the items Malborn smuggled in and continue the quest. So this guide will teach you how to do the distraction in Thalmor Embassy in Skyrim.
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Skyrim Diplomatic Immunity: How to Create a Distraction at the Thalmor
The best way to distract a large number of people at a party at Thalmor Embassy is to provoke one drunk to get everyone's attention. When you get inside the Thalmor Embassy after showing the Thalmor Wizard your invitation, foremost, find Malborn at the bar and talk to him. This will be the best time for you to pick up the Colovian Brandy, which you'll need a little later. After that, look around and find a pretty arrogant guy named Razelan sitting on a bench around the room.
The first thing he'll say when you start talking to him is what he needs to do to get some drinks. As you can already tell, this will be your target, so offer him a glass of brandy, and he will ask what he can do for you in return. By the way, you can also take a glass of Colovian Brandy from the waitress's tray if you haven't already taken it from Malborn at the bar. Ask him to do something to get everyone's attention for a few minutes. Being grateful for the drink, Razelan will be happy to help you and start some kind of speech.
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As soon as everyone starts turning around and approaching Razelan, you should waste no time and quickly walk over to Malborn. Together with him, you will enter the kitchen, which is behind the door, and there will be a chest with all the things you gave him beforehand to smuggle.
After that, you can continue with the quest, either by simply killing Thalmor guards and moving closer to the next quest marker or by trying your luck and dexterity and completing this quest by stealth, although it is an almost impossible challenge.