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Liquid Awesome
LokiDR said:It seems like you are just making an arbitrary decision, which doesn't help anyone.
Since the rules are unclear on this point, yes, I am making an "arbitrary" decision.
I would not be offended or angry if a player in my game brought up the "can we set it on fire" option. In response, I would say, "The Grease spell makes stuff slippery. Any use of the spell that would benefit from making something slippery is fine. Nothing in the spell description indicates that it is particularly flamable and, if it were intended to be a useful way to employ the spell, I think it would have been mentioned (see Web)."
I feel that, without the ability to burn, Grease is still a cool and useful 1st level spell. With the ability to burn (assuming 1d6 fire damage per round) I would say it is looking more like a 2nd level spell in terms of power and utility.
I can see why you might disagree. As I said before, I don't think your argument is without basis. I just think that it lends a bit too much versatility and power to a 1st level spell for my comfort.