Scything Talons - Ridged, chitinous claws used by most melee-centric Tyranids. These are the main weapons of the Hormagaunts. Toxic Sacks - Tick-like organisms that inject virulent toxins into the Tyranids. These toxin are in turn, secreted onto the Tyranid's claws. This is one of two optional biomorphs used by Hormagaunts. Adrenal Glands - Adrenal Glands are found on many variants of front-line tyranids. The biomorph floods the creature with a host of chemicals and hormones which cause the Tyranid creature to enter a hyperactive state of frenzy.