Library / Magic
Grease
Nonflammable grease covers the ground in a 10 foot square centered on a point within range and turns it into Difficult Terrain for the duration.
Description
Nonflammable grease covers the ground in a 10 foot square centered on a point within range and turns it into Difficult Terrain for the duration. When the grease appears, each creature standing in its area must succeed on a Dexterity saving throw or have the Prone condition. A creature that enters the area or ends its turn there must also succeed on that save or fall Prone.
Source: System Reference Document 5.2.1
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