Table: Tumble Checks

DC	Action
	15	Treat a fall as 10 feet shorter.
	15	Tumble at 1/2 speed as part of normal movement to provoke no AoO. (Check for each opponent, and each new enemy adds +2 DC)
	25	Tumble at 1/2 speed through an enemy square. (Check for each opponent, and each new enemy adds +2 DC)

DC Modifier	Surface is. . .
	+2	Lightly obstructed. (Light rubble, undergrowth.
	+5	Severely obstructed. (Rocky floor, rubble, thick undergrowth).
	+2	Mildly slippery (Wet floor)
	+5	Very slippery (Ice sheet)
	+2	Sloped or angled

(Check for each opponent, and each new enemy adds +2 DC)