"As the name suggests, BK wins by hitting." Deck 2013

Playing

With 《Foolish Burial》, he sent 《BK Switch Hitter》to her GY and Xyz summoned 《Laval Val Chain》. After that, the switch hitter can be salvaged by dropping 《BK Glassjaw》with the chain effect.
If you can grasp the basic flow of summoning a switch hitter on the next turn → reviving Glassjaw from his GY with an effect → Xyz summoning 《BK Restraint Guard Lead Blow》, you can easily turn it around.
There are methods other than the above to connect to the chain.
1, Summons 《Summoner Monk》.
2, With the effect of "Summoner Monk", Special Summon "BK Switch Hitter" from the Deck.
Xyz Summon Laval Val Chain with 3 or 2 bodies.
4, Send the material 《BK Switch Hitter》to GY, and send 《BK Glassjaw》from the Deck to GY.
5, Recovered "BK Switch Hitter" with the effect of "BK Glass Joe".
I think the latter is easier to connect to the chain.
Also, in order to make it easier to get 《CNo.105 BK Comet Caestus》, 《Battlin' Boxing Spirits》is loaded. In addition to Chaos Xyz Change, it can be connected to normal Xyz Summons, so it seems easy to use.
Most of the cards are cheap and easy to build (with the exception of 《No.101 S・H・Ark Knight》and 《Laval Bal Chain》, chains are gradually declining in value).

Strength

1, Summons 《Summoner Monk》.
2, With the effect of "Summoner Monk", Special Summon "BK Switch Hitter" from the Deck.
Xyz Summon Laval Val Chain with 3 or 2 bodies.
4, Send the material 《BK Switch Hitter》to GY, and send 《BK Glassjaw》from the Deck to GY.
5, Recovered "BK Switch Hitter" with the effect of "BK Glass Joe".
A barrage of lead blows is also possible.

Weakness

Macro Cosmos, which indiscriminately removes his GY, and Necrovalley, which blocks effects that affect GY, are great enemies. It's also weak against 《Thunder King Rai-Oh》, but it can be destroyed in battle, so I don't think it's a problem.
Also, since the price is the first priority, there is a problem that 《Forbidden Lance》is not loaded.
Since it appeared in the Gold Series 2014, it is thought that the value will decrease, but it is not included at this time.

Customize

As mentioned in the weak points/problems, make sure to stack 2 or more 《Forbidden Lance》from Gold Series 2014.
It might be a good idea to hide 《Forbidden Chalice》, 《Forbidden Dress》, and 《Xyz Territory》in your side Deck.
Also, removal problems may occur, so it is recommended to load 《Blaster, Dragon Ruler of Infernos》or put other removal cards in the main or side.