You control permanents that can tap to add at least ({4} magic symbol) ({B} magic symbol) .
({3} magic symbol) ({B} magic symbol) available.
Steps
Cast Last Voyage of the _____ by paying ({3} magic symbol) ({B} magic symbol) .
Last Voyage of the _____ enters the battlefield, returning Worldgorger Dragon from your graveyard to the battlefield and attaching Last Voyage of the _____ to it.
Worldgorger Dragon triggers.
In response, tap permanents you control to add at least ({4} magic symbol) ({B} magic symbol) .
Resolve Worldgorger Dragon's ability, exiling all other permanents you control.
Last Voyage of the _____'s last ability triggers, sacrificing Worldgorger Dragon.
Worldgorger Dragon leaves the battlefield, returning all permanents exiled by it to the battlefield.