High Priest Thekal allows you to get full value from your healing effects (Including Reno Jackson). This is not only good against aggro but gives you more time vs Reno Priests and other OTKs since you can get up to 60 effective HP.
You can use the combo pieces to bounce Reno Jackson to lockout aggro. You don't need to win with the OTK.
You can use the combo pieces to bounce High Priest Thekal to lockout combo decks by getting a lot of armor. You don't need to win with the OTK.
If you encounter many Reno Decks with Dirty Rat, this deck will drop a lot of winrate because you can end up without a win condition.
Currently experimenting. This is however the best version I came up with until now.