Difficult Terrain
A space is Difficult Terrain if the space contains any of the following or something similar:
- A creature that isn't Tiny or your ally
- Furniture that is sized for creatures of your size or larger
- Heavy snow, ice, rubble, or undergrowth
- Liquid that's between shin- and waist-deep
- A narrow opening sized for a creature one size smaller than you
- A slope of 20 degrees or more