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Iron
(mander.xyz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
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This is a science community. We use the Dawkins definition of meme.
You could also get a big sword-shaped ice cube mold, a chest freezer and probably not even a whole enemy.
You would have to do battle in freezing climates too though in order for it to remain physically effective
Though I imagine the psychological effectiveness might persist a bit longer
I'd suggest a warhammer mold, just for stability.
But then you'd have to paint it.
Mythbusters did this on their first episode: ice bullet. I think a sword might also be too brittle unfortunately.