Do you ever use Prism of Amyntok with an EOTG? If you have curse of the fates up it hits on a 2+ and if you hit on a 3+, you can boost it to always do 2 mortal wounds. The great thing is, that it happens in the movement phase, so it's a new +1. The range is the downfall.
In theory you tp EotG - D6 mortal wounds +1, use Slann to cast Bolt D3, movement phase use Prism to do 2-4 mortal wounds. Not bad. Huge target though and it dies pretty easily.
The extra movement doesn't double, it was ruled against in a tournament over in the UK. It's the same as the balewind + astrolith bearer for range, you multiply then add. I tried argue it was changing the units actual move characteristic before anything happened but was told no. From what I've heard this list worked by using fangs to get the 1 drop and just go first and get onto points. By the time the opponent has killed through 80+ models you're so far ahead on objectives it doesn't matter if you get tabled.