I got a problem, hopefully somebody can help me. I managed to get all the cards in this deck except for for 2, Blackwater behemoth and Mutanus. I have only got enough dust to create one of them, so my question is, ¿Which one do I choose to create and what do I replace the other one with?

I was going to create blackwater behemoth and replace Mutanus with the massive owl.

Any help will be welcome 🙂