pyrotechnist

noun

1. (dated)A pyrotechnician: person skilled in the manufacture or setting off of fireworks and firework displays.

   “That the Secretary of the Navy be, and he is hereby, authorized to appoint a pyrotechnist for the service of the navy, […]”

2. (figuratively)One who demonstrates a brilliant display, as of rhetoric or wit, or of virtuosity in the performing arts.

   “"It is thus the pyrotechnist (should we say demiurge?) who gives meaning to the so to speak explosive effervescences that are weaving the world of the spectator"”