Wizard apprentice turned bad

Welcome to another episode of 'crazy and wild dreams by Monstermaster13 Productions', as I've mentioned i've turned into characters or famous faces in my dreams and have celebrity dream voice casting and guest stars and so who was the guest star in these ones? Why someone who is well versed in the world of dreams none other than Agent Dale Cooper himself Kyle Maclachlan. Now i've been turned into his version of Paul Atreides in one dream where it was kind of a power-up thing, like me gaining Paul's powers by accident and summoning a giant sandworm and stuff like that, have been Dale Cooper more than once (including Mr C in the bad ending of my Dale Cooper dream, and normal Dale in the good end) and I dreamed of him quite a bit because of The House With A Clock In Its Walls movie where's the main villain.

Basically the story is about me working as an apprentice to Jonathan Barnavelt (hey Jack Black, funny you showing up for the second time in my dreams after my Goosebumps dream, although that's not his only appearance), and learning how to protect myself from bad hexes, and of course demons and the undead. And i'm very much treated like a family member by him, and i'm giving some mystical charms that will keep me from being corrupted, while Jonathan and Florrence are having one of their witty back and forth conversations i'm studying up on my magic and making one of the sofa cushions in the living room talk, when I sense something off, the animal familiar I have (a horse) senses there's a dark presence.

That presence being Issac (Kyle Maclachlan, in case you didn't know, that was indeed him in the movie) who communicates through a mirror or a window and tries to coax me into summoning him or using his powers, he tries to coax me by telling me he knows how losing a loved one feels (my father passed away IRL in 2018) and that he can help me, but Jonathan and Florrence warn me not to trust him. Of course this does result in him being summoned later on and a spellcasting battle of sorts for his as Issac somehow find a way to get past my protection barrier spell and possess me, causing me to morph into him. Jonathan and Florrence try to stop me from being controlled and corrupted.