# Does Grease have to be a 10 ft square?

### Rules Questions

Can you cast it in a 5 ft wide hallway? Would it extend up one wall 5 ft?

The spell description just says "solid surface", nothing to indicate that has be on the same plane.

(This question is prompted by the current Create Pit thread.)

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Grease does not have the (S) designator, so it is not shapeable. You can still cast it, but the extra area is lost.

Pathfinder Adventure Path, Rulebook, Starfinder Adventure Path, Starfinder Roleplaying Game, Starfinder Society Subscriber

What about a ten foot heart, or would you have to do that manually. :-)

SlimGauge wrote:
Grease does not have the (S) designator, so it is not shapeable. You can still cast it, but the extra area is lost.

He's not asking if he can shape it, he's asking if it will fill 10 square feet of flat surface, even if it has to go up a wall to do it.

My response is you're in GM discretion territory. Will grease run down a steep slope of it's own accord? Can you cast it on a ceiling? Can you cast it on wall?

I'd probably let it cover a wall and stick to a ceiling. As the OP points out, it says "solid surface" an d not floor or ground. Anything that qualifies as a solid surface is fair game, per RAW.

Pathfinder Maps Subscriber

My point was that if you cast grease in a 5 foot wide corridor, it doesn't become 20 feet long (for the same total area of 100 square feet).

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N N 959 wrote:
SlimGauge wrote:
Grease does not have the (S) designator, so it is not shapeable. You can still cast it, but the extra area is lost.

He's not asking if he can shape it, he's asking if it will fill 10 square feet of flat surface, even if it has to go up a wall to do it.

My response is you're in GM discretion territory. Will grease run down a steep slope of it's own accord? Can you cast it on a ceiling? Can you cast it on wall?

I'd probably let it cover a wall and stick to a ceiling. As the OP points out, it says "solid surface" an d not floor or ground. Anything that qualifies as a solid surface is fair game, per RAW.

Grease places no restrictions on the targeted surface. Walls and ceilings are valid surface areas.