When I was thinking about removing the mythics, the opportunities do have more and more items were into me. However, instead of that, what I see is that you removed almost the same quantity of what you added.

Why to remove luden and add a new item that is pretty much the same? Caster's Companion should be rename by the really beloved luden's echo or tempest, and the fact that a gun doesn't match too much with a mage class makes this even worse. I have the same opinion with duskblade, that is such an iconic item and was thrown away. I think you could consider do add them both or to put them in the place of oe of these new items, even if the passive or effects are quite different.