Changes

==TCG OCG Rulings==* The effect that increases LP is a [[Trigger Effect]]. (It does not [[target]].)<ref name="No.7738">{{cite web|url = https://www.db.yugioh-card.com/yugiohdb/faq_search.action?ope=4&cid=7738&request_locale=Related Rulingsja |title =Thought Ruler Archfiend |website =Konami OCG Card Database |accessdate =2023-11-19}}</ref>* This effect activates mandatorily at the end of the Damage Step in which "Thought Ruler Archfiend" destroyed an opponent'''s monster by battle.<ref name="No.7738"/>* This effect does not activate if "Thought Ruler Archfiend" battles a monster with the same ATK and both monsters are destroyed.<ref name="No.7738"/>* The effect that negates the activation of a Spell/Trap Card is a [[Quick Effect]]. (It does not target. Paying 1000 Life Points is the cost to activate this effect.)<ref name="No.7738"/>* This effect is activated directly in Chain to the card activation of a Spell/Trap Card that targets only 1 Psychic monster. (It cannot be activated in Chain to the effect activation of a Spell/Trap Card. It can be activated in Chain not only to the activation of a Spell/Trap Card Rulings:Blackwing - Shura that targets a Psychic monster on the Blue Flame|Blackwing - Shura field, but also to the Blue Flame]]'''{{:activation of a Spell/Trap Card Rulings:Shura that targets a Psychic monster that is banished or in the Blue Flame}}Graveyard.)<ref name="No.7738"/>

==OCG =Q&A Rulings==={{Ruling| Q = If an "[[Embodiment of Apophis]]" treated as a Monster Card by its own effect is destroyed by battle with "[[Thought Ruler Archfiend]]", is the effect of "[[Thought Ruler Archfiend]]" that increases LP activated?*You can activate | A = In this card's negation case, the effect during of "[[Thought Ruler Archfiend]]" is not activated.| cite = 7089| date = 2017-03-24}} {{Ruling| Q = If "[[Icarus Attack]]" is activated by targeting 2 Psychic monsters, or if "[[Icarus Attack]]" is activated by targeting 1 Psychic monster and 1 Spell/Trap Card, can the effect of "[[Damage StepThought Ruler Archfiend]]" be activated in Chain?| A = The effect of "[[Thought Ruler Archfiend]]" can be activated when a Spell/Trap Card is activated that targets only 1 Psychic monster.<refbr />The effect of "[http:/[Icarus Attack]]" targets 2 cards on the field, and even if it is activated by targeting 1 Psychic monster and 1 Spell/yugiohTrap Card, it is not considered as being activated by targeting only 1 Psychic monster.faq.konami.jp<br /EokpControl?&lang=en&tid=43777&event=FE0006 Konami FAQ]: Synchro Monster > Therefore, the effect of "[[Thought Ruler Archfiend</ref>]]" cannot be activated in Chain to the activation of "[[Icarus Attack]]".| cite = 12531| date = 2017-03-24}}