Humming Relic

Whenever a player casts a spell or a creature attacks, put a sound counter on Humming Relic.
At the beginning of each player's upkeep, that player may shuffle his or her library into his or
her graveyard. If a player does, sacrifice
Humming Relic.
{u}, Remove sixty sound counters from Humming Relic: You control target opponent during that player's next turn.