Rorhim Sunseeker, Dragon Rider

When you cast Rorhim Sunseeker, Dragon Rider, search your library for a card named Adult Gold
Dragon and put it onto the battlefield. Then
Rorhim Sunseeker, Dragon Rider becomes an
Aura with enchant creature and attaches to the
Adult Gold Dragon. The enchanted creature gains +4/+4 and indestructible. When the enchanted creature leaves the battlefield or when Rorhim Sunseeker, Dragon Rider is attached to another creature, unattach it and return it to the battlefield. It is no longer an Aura with en