Board Thread:Card Unit Builds/@comment-123.243.220.37-20141012085706/@comment-24863025-20141013130747

It is unstable due to those random buffers, Urcaguary Ex and Lilim. By swapping out Corvus with William, it will be more unstable since it is against FAW, UNLESS you wait till you kill the servant before using Wiilliam's skil.

What you get from replacing Corvus with William:

Stats and more damage if you max her.

What you lose:

AoE to clear the servant and infinite proc

Nonetheless, it will still be unstable.

Since you got 2 SR buffers, I would suggest using them if they are not Uriel or Parvati. Run a 2 turn skipper with Corvus and the 2 SR buffer. If you have the medal, increase their def till they are able to take 2 hits from FAW, thus making them more useful. If you want, you can put in Lilim instead of another turn skipper for the chance of extra damage. Just play around and see which one you prefer.