Creatures you control can tap to produce at least ({1} magic symbol) .
Steps
Activate any number of other creatures you control by tapping them, adding at least ({1} magic symbol) .
Activate Soldevi Adnate by tapping it and sacrificing Village Bell-Ringer, adding an amount of ({B} magic symbol) equal to Village Bell-Ringer's mana value.
When Village Bell-Ringer dies, Nim Deathmantle triggers, causing you to pay ({4} magic symbol) to return Village Bell-Ringer from your graveyard to the battlefield, and attach Nim Deathmantle to it.
When Village Bell-Ringer enters the battlefield, it triggers, untapping all creatures you control.