Astral Dragon | Dance of Many

Cards

Cast
Astral Dragon by paying ({6} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Astral Dragon enters the battlefield, creating two token copies of
Dance of Many that are 3/3 Dragons in addition to their other types.
The
Dance of Many tokens enter the battlefield, triggering their first abilities.
Resolve one
Dance of Many trigger, creating a token copy of
Astral Dragon.
Repeat from step 2 any number of times, creating an additional
Dance of Many trigger on the stack each loop.
Once you have infinite
Dance of Many triggers, resolve them all, creating infinite copies of all nontoken creatures.
As you are resolving the triggers, you may also target
Astral Dragon any number of times to create infinite copies of all noncreature permanents that are 3/3 Dragon creatures in addition to their other types.
At the beginning of your upkeep, pay ({U} magic symbol) ({U} magic symbol) for each
Dance of Many or sacrifice that permanent and exile its associated creature token.