The Sandstorm Warrior and Snakes On a Plane sphere is only working when entered as the very first sphere in an empty sphere slot, while all other slots are still empty. If you place them after you entered other spheres already, then these 2 will not work. This also means you can only use one of these 2 at any given time at max.
Steps to reproduce:
The Sandstorm Warrior and Snakes on a Plane also work if placed after any other sphere is inside the spheres slots, also they work both at the same time.