Forum:Lightpulsar's Effect Timing

Hi Everyone. I run hopeless dragons, and I included Lightpulsar because of the part of his effect that brings back a level 5 or higher Dark Attribute Dragon Type. The way I have been playing (I only play causally with friends), if I had Lightpulsar and Red-Eyes Darkness Metal Dragon on the field at the same time, and my opponent activated something like Dark Hole and destroyed both cards, Lightpulsar's effect could bring back Red-Eyes Darkness Metal Dragon. I then used REDMD to bring back Lightpulsar during my next turn. Recently, my friend questioned the timing on that play. There was an old thread about it, but everything was speculation. Has anyone had any experience with rulings about this? As of right now, the ruling page for Lightpulsar doesn't say anything about it, so I wanted to know if this play was actually "legal".