"The numbers from early logs strongly suggest that wanding does not aid in freezing Viscidus.
The "known" number of freezing effects that must be applied to freeze Viscidus is 200. Next I link two logs where Viscidus is frozen 3 times using ~600 frostbolts* (600/3 = 200), but a substantially different number of wand hits (266 vs 503).
(*The exact numbers, as below, are actually 639 and 641. This is due to some weapon procs occuring between the freeze/shatter phase.)
Below is a log where Viscidus is frozen 3 times total. To do this required 639 frostbolts, and 266 wand hits.
https://classic.warcraftlogs.com/reports/BmXrVk42w7JLxftN#fight=49&type=damage-taken&hostility=1&source=131 Below is a log where Viscidus is frozen 3 times total. To do this required 641 frostbolts, and 503 wand hits.
https://classic.warcraftlogs.com/reports/FPQzgGnMkXHChjt4#fight=62&type=damage-taken&hostility=1&by=ability&source=167 "
Last melee hit is 1:03. You can filter off the colors for all skills and turn melee on to see the cut off.
https://classic.warcraftlogs.com/reports/BmXrVk42w7JLxftN#fight=49&type=damage-taken&hostility=1&source=131&start=5814580&end=5877613Frostbolt hits: 116
Frostbolt melee: 45
Frostbold melee: 46
Wand: 87 hits, exclusive of arcane or not, the remaining numbers hit 200 already.