Slim the deck down to 30 cards to make it more likely to draw the cards that you want for your combo.
Remove the whole earth element. only EA isn't enough reason to make it a duo. (or add more earth cards, like some basilsk blood, and splash the earth element with the mark.)
Aside from all that, Add some faster damage, because that deck now is really slow. (like titans)
Probably add earth shield as well