Difficult Terrain

Difficult terrain has a value. When moving through difficult terrain, you must make a Parkour or Balance Check (occasionally other Checks might work too) with a DC equal to the Difficult Terrain's value.
If you fail, you fall prone, get tangled, or are otherwise unable to proceed in a manner appropriate to the terrain.
If you succeed, you move through a number of feet of the terrain equal to half your result. If this moves you all the way through the terrain then the terrain does not hinder your movement.
While standing in difficult terrain, you have Disadvantage on Strength and Dexterity Checks.