Hufflepuff's Cup

{t}: Sacrifice a food token, add one mana of any
color, and gain 1 life.
At the beginning of your upkeep, create a food
token and put a feast counter on Hufflepuff's
Cup. Then, if there are three or more feast
counters on Hufflepuff's Cup, remove all of
them and create a non-legendary token thats
a copy of Hufflepuff's Cup.
''The only item known to be stolen from Gringotts''