Just out of curiosity, why do you need the poison? Your running a bit low on time quanta, with only a few players and need to make scarabs every turn with pharoahs. I'd increase your deck size and throw in a few hourglasses.
Yes they need to be removed
Seems like you need more
because the Pharaoh's ability is quite costly.
In this situation, you may have to sacrifice some things to give yourself more
.
Yes you definitely need more time to survive (stalling) as well as time quanta
Firstly, I liked the wordplay of the title of your deck

Basically, I feel that unless you are an FG with double draw, it is unwise to attempt to accomplish two strategic thrusts simultaneously. If you want poison, a pure poison rush with flying arsenics and poisons themselves would be much more efficient. However if you wish to stick to a mummy-Pharaoh deck, I would suggest the following modifications:
-6 poison, -1 reverse time, +2 bone pillar, +2 bone wall, +1 time pillar, +2 plague