Advanced format ruling
Prime Material Dragon
Card effect (current official text)Any effect that would inflict damage to a player increases their Life Points by the same amount, instead. During either player's turn, when a card or effect is activated that would destroy a monster(s) on the field: You can send 1 card from your hand to the Graveyard; negate the activation, and if you do, destroy it.
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.