Chris_Nightwing
First Post
1) You said readied action, not reaction, those are different.
2) If the skill-use/maneuver/casting time is just a generally listed as on reaction, that doesn't imply combat. Only when you start narrowing the trigger to things, like "you're attack", instead of "something happens" do you start running into the rules oddities you mention.
Yes, you're right, sorry.
Say the Wizard readies to teleport away if he is charged. As a DM you have to make some sort of decision as to whether the attacker is aware of this. If you opt to trigger it, because goblins are stupid and it makes narrative sense, that's fine. If you don't, because the goblin chief knows enough about magic, the Wizard wastes their turn - there has to be some conversation beforehand about whether or not the tactic will work in advance of it actually being employed.
Then in the reverse, if you have a monster that can do this, you need to decide if the PCs know about its trick. If you tell them, then there's no point in having the trick in the first place is there? If you don't, you've played your own 'gotcha' on the players and whilst that's fun as the DM sometimes, it degrades the trust between you and the players. I try to keep 'gotcha' moments very broad, plot-based things, and they almost never involve screwing over plans carefully laid out and carried through by PCs (so if they hand over the BBEG to the town guard then they might escape for later.. but if they go out of their way to ensure there's no chance of that happening it's no fair to ruin their plans).