Task: Question Answering
Input (English): Does anyone have a link to that video showing off the old Marauder mutation animation ? It was the slower animation that showed his arm bubbling out into a giant mass and then finally materializing into the mutation . It's different than the animation that has been in the game recently up to and including the preview weekend , so I'm not looking for the one that is currently in the game ( just the purple cloud animation around the arm ) . I wasn't sure if I saw it linked here or on another forum , but , regardless , I forgot to bookmark it . 
Question: What may be some traits of the old Marauder mutation animation ?
Output (English): It focused on limbs changing .