Here is a showcase which was made by kiwiinbacon. Check his channel out for more interesting and uncommon deck lists!
Here is the link (Cannot embed a video atm): https://www.youtube.com/watch?v=cFDSRjot-Is
The mulligan is actually pretty easy and straight forward:
You ALWAYS keep Acolyte of Pain, Loot Hoarder and Arcanologist. In aggro matchups you want Doomsayer and Frost Nova. If you are not facing any aggro decks you can also keep Arance Intellect or just keep it if you dont have any minions. You can keep Research Project in slower matchups. Also can be used to mill key cards from your opponent.
The strategy is pretty easy but the executing is kind of hard so I have a few tips foryou which will make it easier to finish the combo before you die :)
1) Dont freeze the board if there is no threaten! - So only use freezes if there is a big and dangerous board because your stalling is limited (6 freezes)
So that's actually it :)
Ty for your great support and if you have any questions/suggestions feel free o share them in the comments :)