Advanced format ruling
Volcanic Hammerer
Card effect (current official text)Once per turn, you can inflict damage to your opponent equal to the number of "Volcanic" monsters in your Graveyard x 200. If you activate this effect, this card cannot attack during this turn.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.