Prize or Slime Mystery Bag

There's some mystery bags left from my last event!
 
It's a 50/50 chance, will you get an awesome Who prize or will you get a sachet of cursed slime? Only one way to find out.
 
Prizes include; Battles in Time Packs (Invader / Ultimate Monsters), Character Building Blind Bags (S2 / S3 / 50th Anniversary), Keyrings, Pin Badges.