Someone on reddit seems to have discovered a curious interaction between the Barbarian and Ranger abilities, which seems like something that should probably be patched out (assuming I'm not missing something as to how it works).
- The ranger has the feat 'Disrupt Prey', which works similarly to attack of opportunity, but only against their chosen target and as a free action.
- The barbarian has the feat 'No Escape', which allows them to follow an enemy that tries to leave their reach as a reaction.
- One of the conditions for Disrupt Prey is 'or leaves a square during a move action it’s using.' (while it is within your reach).
- No Escape makes it clear that you are moving with the target, not after them, and that they remain within your reach at all times.
- While only one reaction or free action can trigger at a time, a creature that strides 25 ft is leaving a square on five separate occasions, possibly meaning that they create five separate triggers.
- On the first trigger, the Ranger/Barbarian uses No Escape, remaining in reach of their prey for the remainder of the move. The prey then leaves squares four (or more, if the Barbarian can keep up with them!) times, each time triggering the free action Disrupt Prey. (They may be able to stop after they start taking hits - do you need to confirm where you're moving to before you Stride?)
This requires the target to be designated as the Ranger's prey, which has a Concentrate tag, but I don't think there's anything saying that, once designated, a creature stops being the Ranger's prey if they can no longer concentrate.
Is there a rule I'm missing here that prevents this?