When a character is forcibly moved but stopped by an obstacle, they take 1d6 bludgeoning damage for every space this movement is cut short. If they hit another creature, both creatures split this damage. Small, Tiny, and Flying creatures are affected by forced movement twice as much, Large creatures half as much, and Huge/Gargantuan creatures ignore it.
Falling inflicts 1d6 bludgeoning damage for every 2 spaces (10 ft./3 m) fallen.