Blood Pool

You become a living pool of blood of 20 ft and travel 3 times your walking speed, duration until the end of your turn, you may pass through other creatures' space without provoking attack of opportunity, you can only be targeted by area of effect attacks. If you finish your turn in a space you cannot fit in your normal form, roll a CON saving throw of DC15 on failure loose 1/2 of your total hit points, and you being moved to the closest viable area, on success no damage and you still are being moved to the closest viable area),