Lord Commander Eidolon

Relentless models can shoot with Heavy or Ordnance weapons, counting as Stationary, even if they moved in the previous Movement phase. They are also allowed to Charge in the same turn they fire Heavy, Ordnance, or Rapid Fire weapons.

Independent Characters can join other units. They cannot, however, join units that contain Vehicles, Dreadnoughts, Automata or any model with the Monstrous sub-type (unless the Independent Character also has that Unit Type or sub-type). They can join other Independent Characters though to form a powerful multicharacter unit.

Joining and Leaving a Unit
An Independent Character can begin the game already with a unit, either by being deployed in unit coherency with it or, if the unit is in Reserve, by you informing your opponent which unit it has joined.

In order to join a unit, an Independent Character simply has to move so that they are within unit coherency distance of a friendly unit at the end of their Movement phase. If the Independent Character is within unit coherency of more than one unit at the end of its Movement phase, the player must declare which unit it is joining. If an Independent Character does not intend to, or cannot, join a unit, it must, where possible, remain outside of unit coherency with that unit at the end of the Movement phase. This is to make clear whether they have joined a unit or not. Note that after an Independent Character joins a unit, that unit can Move no further that Movement phase.
An Independent Character can leave a unit during the Movement phase by moving out of unit coherency with it. They cannot join or leave during any other Phase – once shots are fired or Charges are declared.

An Independent Character cannot leave a unit while either they or the unit are in Reserve, locked in combat, Falling Back or have been Pinned. They cannot join a unit that is in Reserve, locked in combat or Falling Back. If an Independent Character joins a unit, and all other models in that unit are killed, they again become a unit of one model at the start of the following Phase. While an Independent Character is part of a unit, they count as part of the unit for all rules purposes, though they still follow the rules for Characters.

Special Rules
When an Independent Character joins a unit, it might have different special rules from those of the unit. Unless specified in the rule itself (as in the Stubborn special rule), the unit’s special rules are not conferred upon the Independent Character, and the Independent Character’s special rules are not conferred upon the unit. Special rules that are conferred to the unit only apply for as long as the Independent Character is with them.

Independent Characters and Infiltrate
An Independent Character without the Infiltrate special rule cannot join a unit of Infiltrators during deployment, and vice versa.

Independent Characters and Ongoing Effects
Sometimes, a unit that an Independent Character has joined will be the target of a beneficial or harmful effect, such as those bestowed by the Blind special rule, for example. If the Independent Character leaves the unit, both the Independent Character and the unit continue to be affected by the effect, so you’ll need to mark the Independent Character accordingly.

Conversely, if an Independent Character joins a unit after that unit has been the target of an ongoing effect (or joins a unit after they themselves have been the target of an ongoing effect), benefits and penalties from that effect are not shared.

Flawless Execution: On a Turn in which they make a successful Charge, even if that Charge is considered a Disordered Charge, models with the Legiones astartes (Emperor's children) special rule make their attacks in an assult at on initiative step higher than normal - after any initiative modifiers from other special rules have been taken into account. Models with the Legiones Astartes (Emperor's Children) special rule and Vehicle unit type gain a bonus of +1 to all To Hit rolls made for Defensive Weapons when making a Shooting Attack as part of a reaction.

Lords of Profligacy
After a Shooting Attack has been resolved against a unit composed entirely of models with this special rule, if that unit is not Falling Back, its controlling player can choose for it to become Stupefied. If a unit becomes Stupefied while Pinned or affected by the Blind or Concussive (X) special rules, it ignores the effects of these while Stupefied.

Stupefied
A unit that is Stupefied can only fire Snap Shots and cannot make Reactions in any Phase. If a unit that is Stupefied has a Charge declared for it, then that Charge is always considered to be Disordered. Furthermore, whilst Stupefied, all models in that unit increase their Strength Characteristic by +1 and when a model in a Stupefied unit suffers an unsaved Wound, it can make a special Stupefied roll to ignore it. Stupefied rolls may not be taken against attacks that have the Instant Death special rule. Roll a D6 each time an unsaved Wound is suffered. On a 6+, the unsaved Wound is ignored. On any other result the Wound is applied as normal. Add 1 to Stupefied rolls made for units which have the Fearless special rule. A Stupefied roll is a Damage Mitigation roll – any model may make only a single Damage Mitigation roll of any type for any given Wound.
At the end of its controlling player’s following turn, the unit is no longer Stupefied. Whilst it is Stupefied, a unit does not take further Morale checks in the Movement phase or Shooting phase and cannot be Pinned. If the unit is forced to move, for example, if it has to Fall Back, it is no longer Stupefied. If assaulted, the unit will fight as usual, but enemy units do not receive the Initiative penalty for having Charged a unit through Difficult Terrain, even if the Stupefied unit is in Difficult Terrain. If a unit becomes Stupefied while making a Charge, then that Charge continues as normal, but is automatically counted as Disordered. Units that are locked in combat can be Stupefied, but take Morale checks in the Assault phase as normal and if forced to Fall Back are no longer Stupefied.