Wolfsbane

As the Warmaster swung up the maul, Russ twisted free of the claw, shredding his own armour and flesh to force an opening, and with every ounce of his strength he thrust the spear one-handed into Horus' side. A shockwave blasted from the impact, Russ' face he pushed on, grinding the spear through the outer layer of Horus' Terminator plate, into the armoured undersuit, through the body glove and into his brother's flesh. Horus looked down at the weapon protruding from his flank in disbelief. A thin sheet of blood ran down the glistening black ceramite of his plate.