"Prototype Subterror (Ask for advice)" Deck 2017

Playing

I like the reverse theme, so I tried to build it to challenge the environment as much as possible! I'm a beginner, so if you have any suggestions for improvement, please let me know!
key card
《TRUE Emperor Lithos Azim D》Destroy two bodies including EARTH from the hand and destroy them to SS.
《《Instant Fusion》》SS Raideen
《Invoked Raidjin》Put the monsters on the field face down
《The Hidden City》　Subterror monster search when activated. Turn the back defense face up on your turn. Attack with the back defense face up during the opponent's damage step negate
《Subterror Final Battle》Turn Subterror into face-down defense, make it face-up, prevent its effect from being negate, or combine offense and defense. Set again after activation
《Subterror Mentor》Flip Monster. Subterror search when reversing. On turn 1, put yourself and the other one on your back.
《Swordsman of Subterror》　GY to SS when own monster is reversed. From the Deck, he drops a Subterror, sends his Subterror in the field to his GY to be at or above that level, and SSs the monster dropped from the Deck.
< Subterror Fiendess > negate the opponent's effect by making his Subterror on the field face-down defense with the hand trigger. When you're on the field, make your monster face-down defense, GY, and SS from your hand.
《《Subterror Behemoth Fiendess》》Diagonal bottom left and right Link Monsters. Flip Monster dropped from Deck, SS from hand. If the link destination is reversed, GY's reverse 《Monster Recovery》

Strength

Mainly create a field with the following combos.
①When you have Shambhala and Swordsman without Subterror Maris in your hand
Shamballa: Demon Search, Swordsman NS (Normal Summon), Swordsman Effect: Doushi Back Defense SS. Flip Shambhala Mentor to face up, revive with Swordsman, and search for decisive battle with Mentor effect. In the opponent's standby phase, use the swordsman effect to create an archer defense SS.
② Ritos Azim, archer, EARTH monster
NS the shooter. SS by destroying the archer and his EARTH with Lithos Azim effect. His archer effect made him Subterror SS from his deck, and his Lithos Azim effect removed 3 cards from his opponent's extra deck.
③ With opponent monsters present, he can use Subterror Maris, Youma or Swordsman, Shamballa, Subterror Maris or Decisive Battle.
Search for demons or swordsmen in Shambhala. Swordsman NS and doshi front side SS with effect. Use the guider effect to turn your opponent and yourself face down. When turned backside he put Subterror Maris front defense SS. Shamballa reverses the guider, and with the guider effect he is Subterror Maris or the decisive battle search, and the swordsman effect revives him. 《Subterror Behemoth Fiendess》SS with Swordsman and his Subterror Maris. With its effect, Subterror Maris was used as a back defense SS from my hand.
If you want to deal damage all at once, use Instant Fusion or youma, deploy his Subterror Malice on the field, and raise his ATK to hit him in a fierce battle.
You can't deploy with NS monster effects or when Shambhala is stopped, so it's better to use 《Instant Fusion》to deploy Subterror Maris or put a Fusion Tuner in the Deck to interfere.

Weakness

Negate Shambhala, GY effect, monster effect is quite painful. If you use Darklaw or Rift, you can't even hit your eyes.
As a countermeasure card, 《Unending Nightmare》destroys the face-up Trap Spell, and 《Black Hole》against monsters such as Darkrow. Put Guidance Disconnection on the side and aim for the extra zone.
As a task, it is a big task to increase the number of hand accident by Subterror Maris and development other than NS.

Customize

I tried to build it as close to the environment as possible. 《Unending Nightmare》can be made into a cyclone system depending on the situation. When playing Fan Deck with friends, he can have 10 Subterror Malice, or increase Fierce Fighting to get some fun moves (like 3 Fierce Fighting + 1500 back defense). Having too many Subterror Malices can lead to card mishaps, and having too few can cause him to run out of Flip Monsters and he won't be able to deal with Subterror Malice's effects well, so I think 7-9 is best.
I would appreciate it if you could tell me about other combos and recommended cards.