Card that I really want in:
Esther the Courageous
What stops you from taking her? Since she is not Exodus?
Regarding the Destroyer. I admit he is not very strong since he has high numbers and is not CBI, but with Death of Firstborn, Plague of Darkness, the new Plague of Boils (LoC) and Plague of Flies (LoC) he has quite some good ammo.
An Moses Stuff brings them out of Reserve every turn. Plague of Blood (and if wanted Plague of Lacusts and Plague of Disease ) lets you do sth. and play the next one.