"Dark World Brainwashing" Rating Score by 福人ズッコケ

In other words, Twilight Lightsworn = Lightsworn brainwashed by the Dark World?
A Continuous Trap that has an effect unique to Dark World, returning his Dark World on the field to his hand and rewriting the opponent's monster effect to handicap. Moreover, since there is no turn limit, you can aim for a shutout if the conditions are met. It can be differentiated from 《Skill Drain》in terms of searching, stopping effects outside the field, and not interfering with your own effects. Those who understand that Discard is treated as an opponent's effect will understand the advantage.
However, there are many restrictions, requiring more than 3 cards in hand and his Dark World on the field, and you cannot choose which card to discard. Although there is no turn limit, it is basically an adjustment that makes it difficult to activate multiple times. It will be necessary to utilize Dark Worlds with Special Summon effects such as Bage and Celtic so that the Dark World of the field is not interrupted.
"It's powerful if it fits into the mold, but it's also a pretty peaky card." By the way, you can also bring back his opponent's Dark World, so the mirror seems to be even more quagmire.