
In the 1920s, we didn't have as many regulatory bodies for sports, and thus safety standards were a bit lax. For example, major league hockey didn't require helmets, and Professional Boxers were permitted to carry Demolition and/or Military Explosives.
Accordingly, Nathaniel Cho loves these things. He absolutely needs his Boxing Gloves, and thus has no slots for backup weapons to support his +1 event dmg for the turn. Sure, there's Bandolier, but the beauty of the Boxing Grenades is they're slotless, accomplishing in 1 card & 1 action what Bandolier+(weapon) do in 2 of each.
Better still, they give your Ringside Manager something more to do when he shows up late to the match:
- Got Boxing Gloves? Fetch me my Boxing Grenades!
- Got Grenades? Fetch me my Gloves! (Or more Grenades. Can't have too many!)
- Had Grenades but used them up? Get them back! A nice synergy here- Grenades auto-discard when empty, putting them right where Randall can recur them.
- Even in the 1920s, boxers were only permitted to wear regulation shorts & sweat-soaked tanktop- so Ringside Guys aren't permitted to go find you a Bandolier. You can't even Prepare one!
It's these little details, recreating the pastiche of the early 20th century, that I really appreciate about Arkham Horror's worldbuilding.*
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*- ...I know absolutely nothing about boxing.