In my campaign, one of my players utilized Sleeves of Many Garments. These go for 200gp, and can become any kind of mundane clothing, and say that the clothes revert afterwards. The player utilized these to suddenly don a non-magical swarmsuit that utterly baffled a swarm. I didn't have time when I first had to deal with it to consider how this would have worked out, but basically it nullified any of the swarms effects, and even the ability to do that once for 200gp seems a bit overpowered.. But the magic item seems to say that it reverts and can be used more than once.
That all said, here's what I'm wondering...
- Should this item work multiple times? It doesn't explicitly stated that it does or does not in the item description. Cure Light potions cost 150gp (and only heal 1d8+1 hit points), at the lowest, and only work once. I've never seen a permanent item that works multiple times, yet the argument appears to be pro-multi-use.
- Are the clothes an illusion in the first place? Are they real? The item indicates 'faint illusion,' not transmutation, nor some kind of enchantment. Does that means it's completely illusory?