({7} magic symbol) ({U} magic symbol) ({U} magic symbol) at most available.
Steps
Cast
Astral Dragon by paying at most ({6} magic symbol) ({U} magic symbol) ({U} magic symbol) due to
Animar.
Animar triggers, putting a +1/+1 counter on it.
When
Astral Dragon enters, it triggers, creating two copies of
Airbender Ascension that are 3/3 Dragon creatures in addition to their other types.
When the
Airbender Ascension tokens enter, they trigger, airbending
Astral Dragon and up to one other creature.
Cast
Astral Dragon from exile by paying at most ({1} magic symbol) due to
Animar.
Repeat from step 2.
Notes
The other
Airbender Ascension trigger can be used to blink creatures you control. You would cast that creature in between step 3 and step 4, blinking it each iteration. The starting mana cost is reduced by ({2} magic symbol) if
Animar has a +1/+1 counter on it, then is reduced by an additional ({1} magic symbol) for each +1/+1 counter on it beyond the first.