Pumpking the King of Ghosts — Ruling

Effetto 0

• The『If "Castle of Dark Illusions" is face-up on the field, increase the ATK and DEF of this card by 100 points』monster effect is a Continuous Effect. (If Castle of Dark Illusions is face-up on either player's field, the effect is applied, and the ATK/DEF are increased by 100.)
• The『As long as this "Castle of Dark Illusions" remains face-up on the field, the ATK and DEF of this card continues to increase by 100 points during each of your Standby Phases. This effect continues until your 4th turn after the card is activated』monster effect is a Trigger Effect that activates on the field. (It's not an effect that targets. If Castle of Dark Illusions is face-up on the field and Pumpking the King of Ghosts is gaining 100 ATK/DEF due to its own Continuous Effect, it's an effect that will always activate once during each of your Standby Phases, up until your 4th such Standby Phase.) (TL note: the card's updated JP text in MD clarifies that the counting for the "4th Standby Phase" begins when both Pumpking the King of Ghosts and Castle of Dark Illusions start being face-up on the field. Also, it notes that the ATK/DEF increase due to this effect is applied only as long as Castle of Dark Illusions is face-up on the field.)