Thestalos the Firestorm Monarch (SD3-EN011) - Structure Deck: Blaze of Destruction 1st Edition

Effect: When this card is Tribute Summoned successfully, randomly discard 1 card from your opponent''s hand to the Graveyard. If the discarded card was a Monster Card, inflict damage to your opponent''s Life Points equal to the Level of the monster x 100 points.