You can Special Summon this card (from your hand) by discarding 1 card. If this card is Normal or Special Summoned: You can add 1 "Dark Magician" from your Deck to your hand. During damage calculation (in either player's turn), if your other DARK Spellcaster-Type monster battles an opponent's monster: You can send this card from your hand or face-up from your field to the Graveyard; that monster you control gains 2000 ATK and DEF during that damage calculation only.