Decks that revolve specifically around Dragons can spell doom for your opponent. After these two Monsters are Xyz Summoned using the cards above, use "Dragon's Mirror" to summon "Five-Headed Dragon", and give it to your opponent with "Creature Swap" before attacking it with both of these Monsters, obliterating your opponent with 9000 Battle Damage. Even if your opponent survives the turns these two Monsters are on the field(Which is extremely unlikely), "Gandora Giga Rays the Dragon of Destruction" will gain 1500 ATK due to "Dragon's Mirror" being used earlier.
You can Special Summon both "Number 31: Embodiment of Punishment" and "Number 13: Embodiment of Crime" if you have a Level 1 monster in the Graveyard and "Acorno", "Pinecono" and "Kinka-byo" in your hand. Use "Acorno's" effect to Summon it and "Pinecono". Then, Normal Summon "Kinka-byo" to resurrect the Level 1 monster already in the Graveyard, then Xyz Summon both "Numbers".
One can perform a cleaner version of this Summon by Xyz Summoning either "Crime" or "Punishment" with the "Acorno"/"Pinecono" combo, then use its effect to send one of its Materials to the Graveyard, Summon that monster with "Kinka-byo". While you lose one Xyz material that could have been used for an effect activation, you gain two indestructible monsters on the first turn, with only three cards used.
You can use an "An Unfortunate Report" with the effect of "Number 31: Embodiment of Punishment" or "Number 13: Embodiment of Crime" to double the damage your enemy takes in a single turn.
You can use "Xyz Override" to avoid detaching Materials from "Number 31: Embodiment of Punishment" or "Number 13: Embodiment of Crime" and use their effects¨as many times as you want.
You can use "Wolf in Sheep's Clothing" to Special Summon 2 Level 1 monsters, then Xyz Summon either "Crime" or "Punishment".
You can use the self-Tributing effect of "Evil Thorn" to Special Summon 2 more from the Deck and then Xyz Summon either "Crime" or "Punishment", dealing 300 damage to the opponent as a bonus.