Thanks for the input I'll test some survivability items out and I'll probably make some changes.

i see you build both of them as a glass cannon. morgana it's fine as she's got natural spellvamp. however with cass you need to give her either survivability or spellvamp or a bit of both :/ and also cass isn't as weak as you think she is. her damage when combined with an early stun/snair is outrageous. you need to play her more. on a second thought if you pair morgana and cass together on a lane they will rape face