Grease

You render the ground in the affected area free of all friction. Any creature standing on the ground within the affected squares must immediately make an Agility saving throw vs your Spellcasting skill TN.

• Success: The creature remains standing, but they must spend one additional meter of movement to exit the square without falling Prone.
• Failure: The creature falls Prone.

Any creature that enters or begins their turn in an affected square must also make a saving throw, as listed above, or fall Prone.