REDU format ruling
Chthonian Blast
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)When a face-up monster you control is destroyed and sent to the Graveyard: Destroy the 1 face-up monster on the field that has the lowest ATK (your choice, if tied), and if you do, inflict damage to both players equal to half of that monster's ATK.
Rulings
- This effect does not target.
- This card can be activated during the Damage Step if a monster is destroyed as a result of battle. However, it cannot be activated if a monster is destroyed by an effect during the Damage Step.
- You cannot activate this card if your face-up monster is destroyed in the middle of a chain.
- You can activate 2 copies of "Chthonian Blast" when 1 of your face-up monsters is destroyed, and since it does not target, the 2nd one will resolve and destroy the monster with the lowest ATK and inflict damage, and then the 1st one will resolve and destroy the monster with the next lowest ATK and inflict damage.
- You can chain "Barrel Behind the Door" to "Chthonian Blast".
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.