Blade Leaf

Using the leaf of a plant or plants, they magicaly become blade sharp and then swirl like a blender in an 30ft in diameter circle. Creatures in circle must make saving throw or be overwhelmbed by Blade Leafs.  

Round 1 damage 1d6 piercing on unsuccessful save half movment 

Round 2 damage 1d6+2d6 so repeat round one then take round two on failed save. Half movement again. exp 30ft movement halved round 1 to 15 halved to 8 round 2 on failed save.

Round 3 damage 1d6+2d6+3d6 on failed save and movment down to 0 for rest of round. 

Success in any round inside the circle is half damage and no movement detourance.