Thousand Sons Maulerfiend

Some models have 'Deadly Demise x' listed in their abilities. When such a model is destroyed, roll one D6 before removing it from play (if such a model is a TRANSPORT, roll before any embarked models disembark). On a 6, each unit within 6" of that model suffers a number of mortal wounds denoted by 'x' (if this is a random number, roll separately for each unit within 6").

In your Command phase, you can select one of the abilities listed below to take effect until the start of your next Command phase.
MALEVOLENT CHARGE
Psychic weapons equipped by THOUSAND SONS models from your army have the [LETHAL HITS] ability.
PSYCHIC MAELSTROM
Psychic weapons equipped by THOUSAND SONS models from your army have the [SUSTAINED HITS 1] ability.
WRATH OF THE IMMATERIUM
Psychic weapons equipped by THOUSAND SONS models from your army have the [DEVASTATING WOUNDS] ability.