Cost Not Dead After All by paying , targeting a creature you control.
Holding priority, cast Dualcaster Mage by paying 1.
When Dualcaster Mage enters the battlefield, it triggers, copying Not Dead After All, with the copy targeting Dualcaster Mage.
Resolve the copy of Not Dead After All.
Holding priority, activate Ashnod's Altar by sacrificing Dualcaster Mage, adding CC.
When Dualcaster Mage dies, it triggers, returning itself from your graveyard to the battlefield with a Wicked Role token attached to it.
When Dualcaster Mage enters the battlefield, it triggers, copying Not Dead After All, with the copy targeting Dualcaster Mage.
Resolve the copy of Not Dead After All.
Activate Ashnod's Altar by sacrificing Dualcaster Mage, adding CC.
When Dualcaster Mage dies, it and the Wicked Role token attached to it trigger.
Resolve the Wicked Role trigger, causing each opponent to lose 1 life.
Resolve the Dualcaster Mage trigger, returning it from your graveyard to the battlefield with a Wicked Role token attached to it.
Repeat from step 7.
This clever loop turns Ashnod's Altar into a self-sustaining engine by utilizing Not Dead After All to perpetually rescue Dualcaster Mage from the graveyard. Every time Dualcaster Mage enters the battlefield, its ability targets the spell, ensuring a fresh copy is always waiting in reserve before the Altar converts the mage into colorless mana. Because Not Dead After All also generates a Wicked Role token upon the creature's return, the repeated sacrifices effortlessly drain your opponents' life totals to zero while generating infinite resources.