Bottomless mud hole

Bottomless mud hole: The user turns the ground beneath their target into a deep, muddy pit that the target will slowly sink into. To prevent targets from escaping, the walls of the pit are lined with hands made out of mud that pull the target deeper. These pits can only be created on earthen surfaces. Rank: A. Style: Ninjutsu. Chakra cost: 60 per round. Range: 100ft. Radius, +20ft each round Save: 16, dex vs grapple. Damage: 5d20 Suffocation per round. Focus: Yes. Requirements: Earth Style. Action.