Pyrorex the Elemental Lord (CBLZ-EN040) - Cosmo Blazer 1st Edition

Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by having exactly 5 FIRE monsters in your Graveyard, and cannot be Special Summoned by other ways. When this card is Special Summoned: You can target 1 monster your opponent controls; destroy it, and if you do, inflict damage to both players equal to half of its original ATK. You can only use the effect of "Pyrorex the Elemental Lord" once per turn. If this card leaves the field, skip the Battle Phase of your next turn.