Grease spell and large(r) creatures

[Eridan]

I have one question regarding the Grease spell and large(r) creatures:

Grease covers an area of 10x10ft and large creatures have a base of 10x10ft too. When is such a creature affected by the grease spell?

As soon as it enters/covers
A. at least one square of grease
B. at least half of its base (10x5 ft. for a large creature) with grease
C. the whole base (10x10ft. for a large creature) with grease

A. is really silly as soon as we talk about huge or larger creatures
B. is my prefered solution
C. is to extreme

[Gauss]

If it steps on a greased square it is subject to the spell. 5' square is all that is required. Think of it as a banana peel.

- Gauss

[talmerian]

Generally a terrain is considered hampered movement if half or more of the area is hampered. I have always used this as a guide for larger creatures. Grease basically creates a 10 ft square of hampered movement, so if the large creature is halfway on to the area it is affected.

That is how I would rule it in my game...

Grease is one of my favorite spells, I usually summon it right under a large creature.

[Eridan]

@talmerian
Cannot find this in the rules but it supports my solution B. Can you give me the RAW ?

[mplindustries]

No, you won't find that in the rules because it's not there.

Gauss is right, if any portion of the enemy touches any portion of the spell, they are affected. Look at it this way--do you require half or more of a creature to be within the area of a Fireball for it to take damage? Of course not. So why try to apply that to Grease?

[Midnight_Angel]

mplindustries wrote:

So why try to apply that to Grease?

Because the idea of, say, a colossal ooze falling prone because a single one of the 36 squares it occupies is slippery might be a tad... hard to swallow?

[zylphryx]

Oozes are amorphous ... They have no prone position ... Or they are always prone, depending on how you look at it.

[Eridan]

Ok it is RAW but it is ridiculous too.

The Tarrasque (or a similar creature, dinosaurs..) falls prone because one end of a claw is greasy.

Thanks for clarification. I will use a houserule (see B).

[Ughbash]

An interesting thought is how effective is grease....

You pay movement costs for the hex you are going INTO not the hex you are in. This woud imply that even a medium creature could step out of a grease hex because with a 10x10 area there is always a safe hex to step into (Assuming open terrain).

[Zark]

Midnight_Angel wrote:

mplindustries wrote:

So why try to apply that to Grease?

Because the idea of, say, a colossal ooze falling prone because a single one of the 36 squares it occupies is slippery might be a tad... hard to swallow?

Adamantine Dragon: "The game is not a simulation. It is an abstraction."

;-)

[Eridan]

Zark wrote:

;-)

I know but some rules are really ridiculous and scream for a houserule ! :)

Back to topic
Ughbash question is good. Can you move out of a greased square without an acrobatics check?
After falling prone can you crawl through a greased square without an acrobatics check?

[JHFizban]

If you allow someone to enter the area of a spell but not be affected by that spell, that sets a bad precedent.

Would you do the same if a Large creature entered only one square of Stinking Cloud? How about Cloudkill? If a giant's leg is in the area of effect of either of those spells, it is still affected, right?

For Grease, think of it this way: It's magical grease, they step in it and fail their save... maybe it gets all magically grabby and flows over the creature's legs/feet. Flavor it how you want, but allow the area of effect of the spell to work as it is supposed to.