Extus, Oriq Overlord // Awaken the Blood Avatar | Dualcaster Mage | Jeska's Will

(and one other card)

Jeska's Will in hand.
Dualcaster Mage in hand or in your graveyard.
Extus and
Ashnod's Altar on the battlefield.
An opponent has at least three cards in hand.
({3} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) available.

Cast
Jeska's Will by paying ({2} magic symbol) ({R} magic symbol) .
Extus triggers, returning either
Dualcaster Mage or any other nonlegendary creature card from your graveyard to your hand.
Holding priority, cast
Dualcaster Mage by paying ({1} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Dualcaster Mage enters the battlefield, targeting
Jeska's Will.
Activate
Ashnod's Altar by sacrificing
Dualcaster Mage, adding ({C} magic symbol) ({C} magic symbol) .
Resolve the
Dualcaster Mage trigger, creating a copy of
Jeska's Will.
Extus triggers, returning
Dualcaster Mage from your graveyard to your hand.
Resolve the copy of
Jeska's Will, adding at least ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Repeat from step 3.