Adamantine Sword Revival

Effect: Activate only when a Dragon-Type monster is Special Summoned from the Graveyard. Tribute that monster and Special Summon 1 "Diamond Head Dragon" from your Deck in Attack Position under the control of the controller of the Dragon-Type monster that was Special Summoned. "Diamond Head Dragon" can't attack this turn.

Rulings

 * The Tribute for this card is an effect, not a cost.
 * If an effect is chained to destroy the dragon monster, this card's effect is negated and the stated monster is not summoned.