Specter's Flute

Specter's Flute enters the battlefield with four mist counters on it.
{2}, remove a mist counter from Specters Flute.
When Specter's Flute has no counters on it, sacrifice it. If you do put a legendary 10/10 blue creature with first strike and Trample named Loosha onto the battlefield.
Just trying to help save Misthallery.