The Joy

friends forever, legendary partner
This card enters with a joy counter on it. On
your endstep double its joy counters.
Each turn each player must sacrifice X
creatures where X is the amount of Joy tokens
present on the battlefield. This creature may not
be sacrificed this way
this creatures power and toughness are equal to
the amount of joy counters on the battlefield
When there are no other creatures on the battlefield, sacrifice this card.