The clicky on the ranger epic bow used to be Ancient: Regeneration (different versions on the different tiers of epic), but it doesnt seem to be working as intended. It would do a DD on the caster and then not increase regen.
Now, it says Ancient: Vine Grasp, and it casts a root/snare with a big DD on the caster (no matter who the target is).

Please look into this, it hasn't changed with the Feb 19, 2011 reboot and changes.

Naturestriker