Use the Force Luke

Yes it starts with only 5 sanity but it throws events around like a jedi into adjoining locations and levels up its cards so quickly, so many have upgraded cards. Heals the horror Thermos fairly consistently, while using Forced Learning to regularly pick what to keep, with Quantum Flux to reshuffle. Interesting use of Barricade in an adjoining location means no investigator ever leaves the location so it blocks a route in. Storm of Spiritsin adjacent location for no friendly fire.