No wyvern encounters so far, but that would probably be something you should want to avoid. In the (not quite, since TPK probably is) worst case, you can scheme to get back whatever treasure or gear you used as a distraction if that’s what it took. The mechanics are different (I use 3d6 for checks rather than percentile), but this is all basically Moldvay Basic (link to the OSE SRD for reference).Talking to a hungry wyvern is a tough one.
Edit: We actually had a wyvern encounter in our Torchbearer game. Torchbearer is based on Burning Wheel, but it’s a love letter to B/X. I think we got away clean in the chase conflict that resulted when we failed to sneak past the wyvern’s nest. In that game, the loss of or damage to equipment would usually be done as part of concessions at the end of a conflict (along with gaining conditions, etc).
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