Allow me to clean that~

You instantly remove a negative effect from the terrain (such as Oil Slick, Sheet Ice, Web etc). Permanent effects such as fissure or effects with HP like a wall cannot be removed with this. A maximum of 15x15ft can be removed in 1 use and you may move to any spot of the cleaned terrain afterwards.

In addition, you may target an ally with this to remove 1 negative physical effect from them instead.