Pearll, Recluse of Dark World
Level 1 DARK
Fiend / Effect
You can only use the effect of this card once per turn.
If this card is discarded by a card effect: You can target 1 "Dark World" monster in your GY, except "Pearll, Recluse of Dark World"; Special Summon it to either field, then if this card was discarded by your opponent's card effect, you can Special Summon 1 Fiend monster from your hand, GY or amongst your banished cards, to either field.
Genta, Gatekeeper of Dark World
Level 4 DARK
Fiend / Effect
You can only Special Summon "Genta, Gatekeeper of Dark World" once per turn.
You can discard this card; Add 1 "The Gates of Dark World" from your Deck to your hand.
If this card is banished and you control a "Dark World" card: You can Special Summon this card.
Dark World Culture Institute
Continuous Spell
You can only use each of the effects of this card once per turn.
During your Main Phase: You can discard 1 "Dark World" monster, then all "Dark World" monsters you control gain ATK equal to the discarded monster's Level x100 until the end of the turn.
If a monster whose original Type is Fiend is discarded from your hand by a card effect (including during the Damage Step): You can discard 1 card, then draw 2 cards.