What does it do? Seems useless to me.

its just a rubish game, what ever colour it is you have to attack if with a spell of the colour eg white would be wind attacks, brown =earth red=fire blue=water

actually you have to attack with spell of opposite color (the idea is to get all the elements to balance)

 

 

 

if it were white and you were to attack it with a wind spell, that would only throw it more out of balance