This challenge from 'the Diva' asks us to use two, and only two tangle patterns. Pokeroot is one of the tangles in my basics class. I teach it so often there that I don't use it much in my own tiles. Cubine is another tangle that I frequently overlook and I shouldn't. So this challenge was good for me.
I had two ideas come to me as I thought about this challenge so I finally decided I might as well just do them both!