Spear 2

Its rampage was cut short by the primarch. Drawing his own arm back, his own armour alive with dancing bullet impacts, Russ cast the Spear of the Emperor into the back of the Contemptor. It pierced the armoured cowling of the machine's power plant. Initially, it appeared to have no effect; the machine continued to slaughter warriors at the command of the traitor who dwelled inside it. But then came the odd taste of maleficarum, and purple lightning crawled all over the power plant. Black smoke and fire belched from the exhaust stacks. A grinding howl sounded from the mechanism, and it detonated, destroying the Dreadnought completely. The Vlka Fenryka were thrown aside by the blast close by Russ, Bjorn ducked as a leg flew over his head, spinning so fast it beat an uneven thrumming from the air. The third Dreadnought stamped through the wreckage, roaring wildly, but it was skwered and felled by four lascannon beams fired from further up the transit tunnel, and slumped noisily into the wall.

Wolfsbane