Dualcaster Mage | Not Dead After All | Yahenni, Undying Partisan

Cards

Yahenni on the battlefield.
Dualcaster Mage and
Not Dead After All in hand.
({1} magic symbol) ({B} magic symbol) ({R} magic symbol) ({R} magic symbol) available.

Cost
Not Dead After All by paying ({B} magic symbol) , targeting a creature you control.
Holding priority, cast
Dualcaster Mage by paying ({1} magic symbol) ({R} magic symbol) ({R} magic symbol) .
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
Yahenni by sacrificing
Dualcaster Mage.
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.
Resolve the
Yahenni ability.
Activate
Yahenni by sacrificing
Dualcaster Mage.
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.