Deadly Demise 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").
Hover Some AIRCRAFT models have 'Hover' listed in their abilities. When you are instructed to Declare Battle Formations, before doing anything else, you must first declare which models from your army with this ability will be in Hover mode.
If a model is in Hover mode, then until the end of the battle, its Move characteristic is changed to 20", it loses the AIRCRAFT keyword and it loses all associated rules for being an AlRCRAFT model. Models in Hover mode do not start the battle in Reserves, but you can choose to place them into Strategic Reserves following the normal rules if you wish.
Stealth If every model in a unit has this ability, then each time a ranged attack is made against it, subtract 1 from that attack’s Hit roll.
Assigned Agents If your army Faction is not AGENTS OF THE IMPERIUM, but every model in your army has the IMPERIUM keyword, you can include AGENTS OF THE IMPERIUM units in your army even if they do not have the Faction keyword you selected in the Select Army Faction step. In this case, the maximum number of AGENTS OF THE IMPERIUM units you can include in your army depends on the battle size, as shown below.
Incursion: 1 RETINUE, 1 CHARACTER, 1 REQUISITIONED
Strike Force: 2 RETINUE, 2 CHARACTER, 1 REQUISITIONED
Onslaught: 3 RETINUE, 3 CHARACTER, 2 REQUISITIONED
Note that you can include AGENTS OF THE IMPERIUM DEDICATED TRANSPORT units in such an army as normal, but each unit must start the battle with one or more units embarked within it, or it cannot be deployed for that battle and will count as having been destroyed during the first battle round.