Edison format ruling
Core Reinforcement
Card effect (current official text)Select and Special Summon 1 "Koa'ki Meiru" monster from your Graveyard in Attack Position. When that monster is destroyed during your End Phase, the controller of this card takes damage equal to that monster's ATK. When this card is removed from the field, destroy that monster. When that monster is destroyed, destroy this card.
Rulings
- This card targets 1 "Koa’ki Meiru" monster in your GY. The effect of "Core Reinforcement" that deals damage to its controller starts a Chain.
- If "Imperial Custom" is face-up on the field and the monster Summoned by "Core Reinforcement" is destroyed, "Core Reinforcement" will remain face-up on the field but the controller will still take damage. If "Core Reinforcement" and the monster it has Summoned are destroyed at the same time, such as by "Icarus Attack," the effect to inflict damage will still be applied.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.