Plague Ogryn

At the start of the Fight phase you may activate the combat stimms - if so, roll a D6. On a 1, one Plague Ogryn in the unit is immediately slain. on a 2-6, each Plague Ogryn increases their Attack characteristic by 1. On a 6, each Plague Ogryn in the unit gains D3 Attacks (roll for each unit).

Each time a Plague Ogryn is slain in the fight phase, nearby units are showered in Plague Bile, roll a dice for every unit within 3" that does not have the Nurgle Keyword, on a 4+, that unit suffers a mortal wound

Regardless of the Chaos Covenant your warlord chooses, Plague Ogryns always (and only) benefit from the Covenant of Nurgle.

If this unit makes a charge move, add 1 to the Attacks characteristic of every model in the unit until the end of the turn.