Neb, Eater of Joy

Hexproof, protection from black and blue.
This spell cannot be countered.
Whenever a zizou or zombie creature enters the battlefield or attacks, give it -X/-X where X is the number of marj counters on this creature.
{t}, remove a marj counter from this creature : you
gain 10 life.
Pay 2 life : add a marj counter on this creature
and your opponent loses 10 life
If Neb, Eater of Joy has 15 or more marj counters on it, the game ends in a draw.