Looking forward to see more Edge of the Earth Investigators Parallels. Because of thier strange Deckbuilding Options its nice to even use the Backside as an alternative. Don't forget you can mix an match Front/Backside of Parallel Investigators.
I think his parallel backside is better then his normal backside version, which allows him a bigger pool for his 5 . While Seeker Cards are generally known for being overpowered, he can still get a lot of good researched cards like Ancient Stone, Dial of Ancients, Forbidden Tome or Dream Diary and good Relics like Segment of Onyx for Pendant of the Queen.
His 1 which nets him normally a lot of Horror, can be countered from the Profane Idol or Cherished Keepsake. But you definitly need Relic Hunter to carry that many Accessories. It might be a good idea to take Dr. Elli Horowitz and/or Occult Reliquary aswell.