Poison Guts is an ability for Deads that allows them to poison enemies.
This ability lets Deads throw poisonous projectiles at the enemy. This costs mana but it can be toggled on or off. poison guts will not cost Mana if it hits a enemy who is already poisoned. this was added in patch 1.47Here is a picture of a gut
Poison allows Deads to kill slower units like Albowtrosses easily. also, this ability is almost useless if the enemy has a Meric with the cure ability.