Wow, two queens in one video !
Card effects : http://yugioh.wikia.com/wiki/Parasite_Queen
Also, technical update : The summons of Cyber Angel Nasateiya and Ultimate Ancient Gear Golem from Episode 123 will come out this friday, please don't ask for them in the comments.
Appears on these pages
Parasite Queen Gallery, Appearances, Trivia, Lores, Artworks, Names