No way to Guess! The Forbidden Gateway is Opened! - S3.E24

Sirius and Erulogs decide to join forces with Lina and the rest hoping to kill Dark Star. Dark Star is release but the close the gate way, making his power only half what is truly is. They fight him just a bit only to have him take off, heading towards the Fire Dragon's temple where a voice starts heard, calling the for the Golden Dragons... they realize who it is... it's Valgaav.