Grease

1st-Level Conjuration Spell (Sorcerer, Wizard)

Casting Time: Action
Range: 60 feet
Components: V, S, M (a bit of pork rind or butter)
Duration: 1 minute

Nonflammable grease covers the ground in a 10-foot square centered on a point within range and turns it into

If a space is Difficult Terrain, every foot of movement in that space costs 1 extra foot. For example, moving 5 feet through Difficult Terrain costs 10 feet of movement. Difficult Terrain isn't cumulative; either a space is Difficult Terrain or it isn't.

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
• ... [more]

for the duration.

When the grease appears, each creature standing in its area must succeed on a Dexterity saving throw or have the

While you have the Prone condition, you experience the following effects.

Restricted Movement. Your only movement options are to crawl or to spend an amount of movement equal to half your Speed (round down) to right yourself and thereby end the condition. If your Speed is 0, you can't right yourself.

Attacks Affected. You have Disadvantage on attack rolls. An attack roll against you has Advantage if the attacker is within 5 feet of you. Oth ... [more]

condition. A creature that enters the area or ends its turn there must also succeed on that save or fall

While you have the Prone condition, you experience the following effects.

Restricted Movement. Your only movement options are to crawl or to spend an amount of movement equal to half your Speed (round down) to right yourself and thereby end the condition. If your Speed is 0, you can't right yourself.

Attacks Affected. You have Disadvantage on attack rolls. An attack roll against you has Advantage if the attacker is within 5 feet of you. Oth ... [more]

.

Source: Player's Handbook, p. 280