Obulhora of Quietsong

As Obulhora of Quietsong enters the battlefield, you may have each opponent draw a card. If you do not, it enters the battlefield tapped.
When Obulhora of Quietsong enters the battlefield, sacrifice all tapped permanents you control.
{t}: Add {c}{c}{c} to your mana pool. If you do, return Obulhora of Quietsong to your hand at
the beginning of the next end step.