Lego 4705 Harry Potter - Snape's Class by LEGO Professor Snape teaches students how to make potions The set contains Severus Snape, Ron Weasley and Peeves. Has the sand-green roof pyramid, which is a feature unique to LEGO Harry Potter Set contains a cup and a goblet for sampling potions, potion ingredients, a spider web and spider, a rat, cauldron and ladle, a working magnifying glass, and a hinged cabinet that Peeves can emerge from. The cauldron, which tips over and spills, reveals a scroll hidden under it; a key and a frog are hidden inside of a table.