This is all the Changelings, and 20-30 "Lord" type creatures. Plus ways of changing creature types of creatures.
The number of strange combos and interactions this deck has is staggering. I've seen this deck do *very* weird things.
Note the only non-Changeling Sliver in the deck is Sliver Overlord.
I tried to not do too many Lords of one individual creature type, but Elves and Archers seem to have more than others. :)