Light element research

In the upcoming season you will be able to play with a total of four elements! Here's the light research potion to choose as reward for beating a horseman. Similar to the darkness research potion, it uses light's custom card look and feel. Hope it's not gonna be too bright for the eyes. PS: Don't forget to submit your uncommon light tower idea!

Why I can't get this potion?

Dawn of Light is not released yet, it will be available on December, 20th!

I knowwwwww