If this card is targeted for an attack: Target 1 Level 7 or higher Dragon-Type monster in your Graveyard; Special Summon it, and if you do, change the attack target to it and perform damage calculation.
Worth noting that it can also revive a fusion or synchro Dragon, provided they fulfill all the following requirements:
- level 7 or higher
- has no summon restriction
- already properly summoned before