Edison format ruling
Supersonic Skull Flame
Card text as printed in this era© Can't be Normal Summoned/Set.
© Must first be Special Summoned (from your hand) by banishing 1 "Skull Flame" from your GY.
① Once per turn: You can inflict 400 damage to your opponent for each "Burning Skull Head" in your GY.
② When this card is sent from the field to the GY: You can target 1 "Skull Flame" in your GY;
Special Summon that target.
Rulings
- As long as this card was initially Special Summoned by its own procedure (and the summon wasn't negated), you can Summon it from the GY with card effects.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.