"Can you fight an enemy that kills you from within?"
– Mortarion

The Death Guard is here! Right as Mortarion's Legion gathers, ready to assault Terra, they receive an update to their arsenal to make them even deadlier. With their new wargear and toxic concoctions, the effect of their iconic Poison trait receives a major change.

Take a look at all the cards affected by this change in the following web post:
https://www.horusheresylegions.com/poison-balance-changes/