Ghired, Conclave Exile | Combat Celebrant | Flamerush Rider

(and one other card)

Declare
Flamerush Rider,
Combat Celebrant and
Ghired as attackers, choosing to exert
Combat Celebrant as it attacks.
Combat Celebrant,
Ghired's second ability and
Flamerush Rider trigger.
Resolve the
Flamerush Rider trigger, creating a token copy of
Combat Celebrant that is tapped and attacking.
Resolve the
Ghired trigger, creating a copy of the
Combat Celebrant token.
Resolve the
Combat Celebrant trigger, untapping all other creatures you control and causing you to get an additional combat phase after this one.
Move to your next combat phase, and declare the
Combat Celebrant token created in step 4 and
Ghired as attackers, choosing to exert the
Combat Celebrant token as it attacks.
Repeat from step 4.
Optionally, you may also attack with
Flamerush Rider to get infinite copies of any other attacking creatures you control.