Valero Energy Partners (NYSE: VLP) debuted on Wednesday, racing to gains of nearly 22% in its first day of trading. With only two and a half weeks to go in the year, this may well be the last master limited partnership IPO of 2013. In the following video, Fool.com contributor Aimee Duffy takes the opportunity to detail the new Valero (VLO 0.61%) MLP, reflecting back on a mammoth year for MLP IPOs and spinoffs in general.