Kaboomer's Opus

Whenever a player rolls the Chaos Library, put a
chaos counter on Kaboomer's Opus.
{2}, {t}: You may cast a spell with converted mana
cost less than or equal to the number of chaos counters on Kaboomer's Opus from your hand without paying it's mana cost.
{t}, Sacrifice Kaboomer's Opus: It deals damage
to each creature and each player equal to twice
the number of chaos counters on it.