Drag onto your avatars name in the hierarchy (Box on the Left). Open the particle system until you see the "Puddle Tentacles". Delete the second two copies. Duplicate "Puddle Tentacle" twice. Click on "Portal". On the box to the right open the "Sub Emitters" tab. Drag the two duplicated particle systems (The new second and third puddle tentacles) to the "Missing (Particle System)" slots. Add a 3-D Plane to the same place you put the prefab. Put the coordinates to 0,0,0. Drag the plane to the "Planes" box in the "Collision" tab in the "Floor Tentacles Rainbow" particle system. Click on your plane you just added to your scene and un-check the "Mesh Renderer" box on the right. Upload avatar.