What skill does Grease use when creatures walk over the grease?

I know when initially cast it checks the reflex save, but when a creature is walking over the grease what skill is checked? Balance doesn't exist as a skill in ToEE, I'm also using Temple+

 

Also is there any "legal" way of changing your alignment from Neutral to Lawful?

 

I'm pretty sure it just does the reflex save each round (and when someone enters the AoE). There's no additional check for moving in the grease. I've thought about adding Balance, but haven't done it.

As far as I know, there's no alignment changing stuff in the game. But maybe I just don't know about it.

 

There are console commands to change alignment, if that's what you mean. Otherwise, it's fairly unsophisticated: if you pick LG at character creation, you're LG throughout even if you work for the temple factions, align yourself with Hextor, and assassinate Wilfrick on behalf of the Scarlet Brotherhood.

More here re console:
https://co8.org/community/threads/change-alignment.4225/

 

A Reflex save is used to determine if someone trips on grease.