Fire Lord Azula | Snap | Dualcaster Mage

Cards

You control up to two lands that can tap to produce at least ({1} magic symbol) ({R} magic symbol) .

Declare
Fire Lord Azula as an attacker, triggering its firebending ability, adding ({R} magic symbol) ({R} magic symbol) .
Holding priority, activate up to two lands by tapping them, adding at least ({1} magic symbol) ({R} magic symbol) .
Cast
Snap by paying ({1} magic symbol) ({U} magic symbol) , targeting any creature.
Fire Lord Azula triggers, copying
Snap.
Holding priority, cast
Dualcaster Mage by paying its mana cost.
Fire Lord Azula triggers, copying
Dualcaster Mage.
Resolve the copy of
Dualcaster Mage. When it enters, it triggers, copying
Snap, targeting any other creature.
Resolve
Snap, returning the targeted creature from the battlefield to its owner's hand and untapping up to two lands.
Holding priority, activate up to two lands by tapping them, adding at least ({1} magic symbol) ({R} magic symbol) .
Resolve the original
Dualcaster Mage spell. When it enters, it triggers, copying
Snap, with
Snap targeting
Dualcaster Mage.
Resolve the copy of
Snap, returning
Dualcaster Mage from the battlefield to its owner's hand and untapping up to two lands.
Holding priority, activate up to two lands by tapping them, adding at least ({1} magic symbol) ({R} magic symbol) .
Repeat from step 5.

This combo has been estimated to be Exhibition (Bracket 1+).