Like some of what I'm seeing here. I'm also working on a Lathril build based more around trying to abuse the tap deal 10 ability and you've got a couple of cards in your list that I think I'm now going to have to try and find room for, especially
Sanguine Bond. I'm finding that I just can't have enough elves in the deck so almost any non-elf card can has a case for being cut just for that factor.
End-Raze Forerunners just doesn't do enough for the mana required so I think that's the easiest cut.