Myojin of Grim Betrayal has at least one indestructible counter.
({4} magic symbol) ({B} magic symbol) ({B} magic symbol) plus enough mana to pay for commander tax, if applicable.
Steps
Cast Iname either from your hand or from the command zone by paying ({4} magic symbol) ({B} magic symbol) ({B} magic symbol) and commander tax, if applicable.
Iname enters the battlefield, causing you to search your library for any number of Spirit cards and put them into your graveyard.
Activate Myojin by removing an indestructible counter form it, putting all Spirits put into your graveyard this turn onto the battlefield under your control.
Results
Put all Spirits from your library onto the battlefield.