Stormsword

In your Shooting phase, just after selecting a target for this model’s Stormsword siege cannon, roll one D6 for the target unit and every other unit within 3" of that unit: on a 5+, the unit being rolled for is struck by a concussive wave. After this model has finished making its attacks against that target unit this phase, each unit struck by a concussive wave suffers D3 mortal wounds.

While this model has 1-8 wounds remaining, subtract 4 from its Objective Control characteristic and each time this model makes an attack, subtract 1 from the Hit roll.

This ability always takes the form Deadly Demise X. Each time a model in this unit is destroyed, after the units embarked within it (if any) have made their emergency disembark moves, roll one D6. On a 6, that model suffers a deadly demise; 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").  Example:* An Impulsor with a unit of Intercessors embarked within it is destroyed by ranged attacks. First, any unresolved attacks made by the attacking unit are resolved. Then the Intercessors make an emergency disembark move. Then the roll is made for the Deadly Demise* ability, and on a 6, that ability is resolved. Finally, the Impulsor is removed from the battlefield.

Each time you gather attack dice for a [BLAST] weapon, add one additional attack dice for every five models that were in the target unit in the Select Targets step (rounding down). If this ability takes the form [BLAST X], each time you gather attack dice for such a weapon, add X additional attack dice for every five models that were in the target unit in the Select Targets step (rounding down) instead.  Example:* If a [BLAST 2] weapon with an A characteristic of 3 targets a unit containing 12 models, you would gather four additional attack dice* for that weapon (for a total of seven for that weapon).

Each time an attack is made with an [IGNORES COVER] weapon, the target cannot have the benefit of cover against that attack (13.08), including from rules that give a model or unit the benefit of cover (e.g. Stealth).