Miirym, Sentinel Wyrm | Ganax, Astral Hunter | Cloudstone Curio

(and one other card)

Cast
Slumbering Dragon by paying ({R} magic symbol) .
Slumbering Dragon enters the battlefield, triggering
Cloudstone Curio,
Ganax and
Miirym.
Resolve the
Cloudstone Curio trigger, choosing not to return anything to your hand from the battlefield.
Resolve the
Ganax trigger, creating a Treasure token.
Resolve the
Miirym trigger, creating a token copy of
Slumbering Dragon.
The
Slumbering Dragon token enters the battlefield, triggering
Cloudstone Curio and
Ganax.
Resolve the
Cloudstone Curio trigger, returning the nontoken
Slumbering Dragon from the battlefield to your hand.
Resolve the
Ganax trigger, creating a Treasure token.
Activate a Treasure token by tapping and sacrificing it, adding ({R} magic symbol) .
Repeat.