Your deck doesn't have any clear strategy. It's fine to have multiple strategies, but, for example, aflaotoxin and bonewalls don't get along very well (lots of malignant cells break your bonewall very quickly).
You can opt for a graveyard+pharaohs+malignant cells+skull shield combo, which would consist of eating malignant cells to buff up your scarabs' attack (without any gravity towers, this will only work for 2-3 turns while you ahve enough
quanta.
Another option is to just go bonewall+graveyard. This way, when you run out of enemy creatures to eat (too big, such as armagios, or immortal, such as phase dragons), you can munch on the skeletons that your graveyard produced until your opponent feeds you some more.
Try slimming you deck down as much as possible and including only the bare essentials, and in good proportions. With the aflaotoxin route, you'd definitely want 2-3 skull shields, to make sure you draw one with your aflaotoxin, since otherwise you'd be helping your opponent.
My recommendation is:
Take out: short sword, poison, momentum, deja vu
Put in: either something like 3/4 bonewalls, 2/3 graveyards, 3/4 gravity pillars (pillars optional, but encouraged. It's annoying when your opponent plays more than 1 creature a turn and you're stuck eating one at a time and watching your bonewall decrease).
OR
Something like 3/4 aflaotoxins, 2/3 skull shields, 5/6 gravity pillars
Hope this helps, let me know how it goes!