Can someone point me in the right direction?

I am new to this forum, so obviously this my first attempt at a post. The knowledge in this forum is priceless and, I would like to say thanks! Just a couple of questions, I want to know if anyone has heard of a "new" or "old" strain called nebula? Maybe what was crossed to create it? Also, I have been trying to locate some "train wreck" fem seeds here in the US. Any help would be greatly appreciated! Thanks.
 
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