Favorite Guild of the Nine Merc?

[BvBPL]

One of my favorite Orbis items is the Guild of the Nine. I love getting weird units from other civs and funky promotions. One of my favorite is getting a vampire and passing around vampirism. Another great one is using arcane option to grab mages (or adepts) with spheres you don't currently have access to. Anyone have any favorites from the Guild of the Nine?

 

[Jarrema]

It is vampire for me too. I also like mimics; of course mages are really useful