This probably needs more testing, but what I can i say? I played a couple games, won, and got excited about the idea.
Vargo is a great weapon carrier due to his ability, so Doorknocker and Plate is a deadly combo and both decent to good on their own. Harsh ruling with Vargo on the field is fun and crushing for you opponent. Giving him endurance through Korovyat Palace breaks off permafrosts and gives him +4/+4 and aegis (to protect from Equivocate/Teleport) and/or berserk. Kaleb's choice protects him from Runehammer. If you see more equivocate, you could swap Choice with Unseal, though obviously only one set of smugglers can fetch it.
Doorknocker is nice because it can be played after a harsh rule to still threaten the board and it can be fetched along with runehammers or plate with Display of Honor or reforge to have a cute 3/5 DD Helpful Doorbot. Svetya it great at stalling their interaction when she comes out, so she is also safe for a turn to put weapons on. I finished one game with her with plate, doorknocker, and pumped by Display of Honor to deal 28 overwhelm damage for lethal.
Fun deck and fun new card. Hope you enjoy!
Thanks for giving me the joy of a Helpful Doorbot OTK. :-)