Right. So deciding to roll a d5 on the table instead of a d6 is just like crossing off the monster they didn't like from the table.
That's right. Now, in effect, it's akin to fudging (as I've noted with several other scenarios under discussion), so I avoid this by having roll tables with possibilities I can always live with.
As it happens, my players are dealing with just such a situation now (to be continued this Friday night). There is an apex predator in my current hex crawl, which is a reskinned and modified adult dragon. Compared to their level (5th), it is very nasty. They've encountered it a few times before, but it never attacks first. What it does is swim past the PCs and its aura has a curse. Fail the save and you will tend to attract more wandering monsters until the curse is removed. Alternatively, you can give it an offering of gold and it won't curse you, but since gold equals XP in this game, that's a tough choice for the players to make.
A few sessions ago, they encountered it and, on a whim, decided to attack it. They barely escaped with their lives after some very clever use of
plant growth (if you can believe it) to slow it down enough where they could get away. But now it has it out for them and is hostile by default. At the end of last session, the random encounter generator spun up and this monster showed up again. I decided that was a good cliffhanger since we were close to time anyway.
They've since been discussing whether to flee or attack it and it looks like they're going to face down this threat, having learned a few things about it since their last encounter. They intend to slow it down to a crawl and then try to pick it off from afar. It might just work and, if it does, it's worth a great deal of gold to them (which means fast leveling), so having just gotten a long rest, they're going to chance it. I'm interested to see how this turns out, and Friday can't get here quick enough.
