Ganax, Astral Hunter | Astral Dragon | Strionic Resonator (and one other card)

Cards

Cast
Astral Dragon by paying ({6} magic symbol) ({U} magic symbol) ({U} magic symbol) .
When
Astral Dragon enters the battlefield, it and
Ganax trigger, along with
Dragon Tempest's first and second abilities.
Resolve the
Ganax trigger, creating a Treasure token.
Activate the Treasure by tapping and sacrificing it, adding ({1} magic symbol) .
Activate
Strionic Resonator by paying ({2} magic symbol) and tapping it, copying
Astral Dragon's ability, targeting
Strionic Resonator.
Resolve the copy of
Astral Dragon's ability, creating two token copies of
Strionic Resonator that are 3/3 Dragons in addition to their other types.
When the
Strionic Resonator tokens enter the battlefield,
Ganax's ability, as well as
Dragon Tempest's first and second abilities, trigger twice each.
Resolve both
Ganax triggers, creating two Treasure tokens.
Activate both Treasures by tapping and sacrificing them, adding ({2} magic symbol) .
Resolve both of
Dragon Tempest's first ability triggers, giving the
Strionic Resonator tokens haste until end of turn.
Resolve both of
Dragon Tempest's second ability triggers, dealing damage equal to the
Strionic Resonator tokens' power to any target.
Activate a
Strionic Resonator copy by paying ({2} magic symbol) and tapping it, copying
Astral Dragon's ability from step 2.
Repeat from step 6.

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