Complex sentence: The music video for "Possesion" was released on November 18,2008 and aired on MTV2's Headbangers Ball, and the music video for "Eternal Refuge" was released June 8,2009.
Split into simpler sentences: The music video for "Possesion" was released on November 18,2008 and aired on MTV2's Headbangers Ball. And the music video for "Eternal Refuge" was released June 8,2009.