Drowning

The caster throws the stone at an area it can see up to 30'; turning into a gelatinous/watery substance as the stone travels through the air. All creatures in a 30' radius must make a Dexterity saving throw or be enveloped by the substance. A creature that makes a successful saving throw is pushed to the edges of the substance. A creature that fails it's saving throw is captured by the substance and it's movement is reduced by two-thirds (ex. 30' base movement is reduced to 10') rounded up. Creatures caught in the substance have double their Constitution modifier to free themselves from the substance or be reduced to 0 hit points.

If a creature has water-breathing whether through natural or magical means the only ill effects is the reduced movement speed.

If the substance can be frozen by magical means (Cone of Cold, White Dragon's breath, etc). Any creature caught in the substance when it is frozen has their movement reduced to zero. They also have up too double their Constitution modifier to free themselves from the substance or be reduced to 0 hit points. If creature has started suffocating when the substance is frozen they have their remaining time to be freed or reduced to 0 hit points.

The substance can be removed by Dispel Magic or Fireball. However, if fireball is used any creature caught in the substance will take half damage with no saving throw to reduce the damage further.

Any creature caught in the substance cannot be hit with melee or ranged weapons. Spells that ignore cover still apply. Torches are immediately extinguished if caught in the substance.

Any creature caught in the substance also fails all Dexterity saving throws.

The spells duration is equal to 1 minute per caster level.