A
grease spell covers a solid surface with a layer of slippery grease. Any creature in the area when the spell is cast must make a successful Reflex save or fall. This save is repeated on your turn each round that the creature remains within the area. A creature can walk within or through the area of grease at half normal
speed with a DC 10
Balance check. Failure means it can't move that round (and must then make a Reflex save or fall), while failure by 5 or more means it falls (see the
Balance skill for details).
The spell can also be used to create a greasy coating on an item. Material objects not in use are always affected by this spell, while an object wielded or employed by a creature receives a Reflex
saving throw to avoid the effect. If the initial
saving throw fails, the creature immediately drops the item. A
saving throw must be made in each round that the creature attempts to pick up or use the
greased item. A creature wearing
greased armor or clothing gains a +10 circumstance bonus on
Escape Artist checks and on
grapple checks made to resist or escape a
grapple or to escape a pin.