This deck is more like a tempo deck with bad late game tempo, haagtha doesn’t really fit an aggro deck. You should run underbelly angler, as worst case he is a 2/3, and best case he nets at least a +1 if you draw another one or sludge slurper. I would also recommend adding the second cult master somehow, because he synergizes well with all of your sparks.
This deck is more like a tempo deck with bad late game tempo, haagtha doesn’t really fit an aggro deck. You should run underbelly angler, as worst case he is a 2/3, and best case he nets at least a +1 if you draw another one or sludge slurper. I would also recommend adding the second cult master somehow, because he synergizes well with all of your sparks.