Tyranids: Norn Emissary1 Norn Emissary a towering psychic bioform and elite monster for your Tyranid army. You can also alternatively assemble it as a Norn Assimilator with toxic bone harpoons instead of the standard Emissary pose. 58 plastic components sprue pieces used to build the model in either configuration (Emissary or Assimilator). 1 Citadel 100 mm round base large base suited to the creatures size on the tabletop.