Cast Living Death by paying ({3} magic symbol) ({B} magic symbol) ({B} magic symbol) , causing each player to exile all creature cards from their graveyard, sacrifice all creatures they control, then return all cards exiled this way to the battlefield.
Archaeomancer and Palinchron enter the battlefield, triggering their abilities.
Resolve the Archaeomancer trigger, returning Living Death from your graveyard to your hand.
Resolve the Palinchron trigger, untapping up to seven lands you control.