PaniK's cards, AKA Yamimakai series (1/14/2024)

Castle of Yamimakai
Level 4/DARK/Rock/Effect
1200ATK/2500DEF
You choose the attack targets of your opponent's attacks. You can Normal Set Level 5 Fiend monsters without Tributing. During the end of your Battle Phase: You can switch all Fiend monsters you control to face-down Defense Position.

Tyrant of Yamimakai (Mad King of the Dark Demon World)
Level 5/DARK/Fiend/Effect
2600ATK/2000DEF
If this card is flipped face-up: You can send 1 monster your opponent controls to the GY. While you control "Castle of Yamimakai", your opponent cannot activate the effects of monsters on their field that share the same name as a monster(s) in their GY. If this card is sent to the GY: You can add 1 "Castle of Yamimakai" or 1 card that lists it in its text from your Deck to your hand, except "Tyrant of Yamimakai".

Reaper of Yamimakai (Death God from the Dark Demon World)
Level 5/DARK/Fiend/Effect
1800ATK/2500DEF
If this card is flipped face-up: You can send 1 Spell/Trap your opponent controls to the GY. While you control "Castle of Yamimakai", your opponent cannot activate the effects of Spell/Traps that share the same name as a Spell/Trap(s) in their GY. If this card is sent to the GY: You can add 1 "Castle of Yamimakai" or 1 card that lists it in its text from your GY to your hand, except "Reaper of the Yamimakai".

Yamimakai Chimera (Killer Chimera of the Dark Demon World)
Level 5/DARK/Fiend/Effect
2100ATK/1900DEF
If this card is flipped face-up: Send 1 of your opponent's monsters to the Spell/Trap Zone as a Continuous Spell. You can send 1 set card you control to the GY (Quick Effect): Set 1 monster that lists "Castle of Yamimakai" in its text from your hand or Deck, except "Yamimakai Chimera". You can only use this effect of "Yamimakai Chimera" once per turn.

Borax, Yamimakai Hunter (Dark Demon World Predator, Borax)
Level 5/DARK/Fiend/Effect
1800ATK/2000DEF
If this card is flipped face-up: You can banish 1 card from your opponent's GY. Your opponent cannot respond to this effect's activation. You can discard 1 card (Quick Effect): Special Summon 1 monster from your hand or GY that lists "Castle of Yamimakai" in its text. You can only use this effect of "Borax, Yamimakai's Hunter" once per turn.

Yamaimakai's Metal Guardian (Dark Demon World's Metal Guardian)
Level 5/DARK/Fiend/Effect
1500ATK/2800DEF
You can send from your hand or Deck to the GY 1 card that lists "Castle of Yamimakai" in its text: Special Summon this card from your hand. You can only Summon "Yamimakai's Metal Guardian" once per turn this way. If this card is flipped face-up: Send 1 set card your opponent controls to the GY.

Fiend Luster Shield (Dark Demon Shield)
Continuous Spell
Activate only if you control "Castle of Yamimakai". Your monsters gain 700 DEF. If "Castle of Yamimakai" is destroyed by an opponent's card effect: Banish this card, and if you do, destroy all monsters you control, and if you do that, inflict damage equal to the highest DEF amongst the monsters on the field that were destroyed by this effect, to the player with the lowest LP (or to your opponent if LP are tied).