Epidimius

Whilst Epidemius is alive, keep a count of all unsaved Wounds caused by the psychic powers, shooting, and close combat attacks of Daemons of Nurgle (friend or foe) - even those that are negated by means other than saving throws, such as Feel no Pain. At the start of each of your turns, consult the table below to determine the effect of the Tally of Pestilence. All Daemons of Nurgle in units within 6" of Epidemius recieve the bonus characteristic or special rule shown below. All effects from the Tally of Pestilence are cumulative.

Wounds / Effect
0-6  No effect
7+  +1 Strength
14+  +1 Toughness
21+  Poisoned (2+) special rule
28+  Feel No Pain (4+) special rule

Cannot join (or be joined by) models without this special rule. Automatically pass Fear, Pinning, and Morale tests.

When a unit with the Daemonic Instability special rule loses an assault, it takes a Daemonic Instability test at the Check Morale step of the Fight sub-phase. This uses the following procedure:

1) Take a Leadership test. if the dice roll is a double 1 or double 6, the Daemon's presence fluctuates:
  Double 1 - Reality Blinks: All Wounds suffered by the unit this phase are restored. Any models from this unit killed this phase return, in coherency, at least 1" from enemy models. If the returning modell's unit is locked in combat, the model Piles In.
  Double 6 - Banished!: Remove the entire unit from play as casualties. If locked in combat, the enemy consolidates. 

2) Now, if a double 1 or double 6 wasn't rolled, compare the roll to the Daemon's Leadership, including modifiers. For each point they fail by, the unit sufffers an additional Wound, with no saves of any kind.

Deep Strike Mishap Table: D6 Roll

1: Terrible Accident! - The entire unit is destroyed!

2-3: Misplaced - Your opponent may deploy the unit anywhere on the table (excluding impassable terrain, but including difficult terrain, which of course counts as dangerous for Deep Striking units), in a valid Deep Strike formation, without rolling for scatter. Units embarked on a misplaced Transport can disembark during their Movement phase as normal.

4-6: Delayed - The unit is placed in Ongoing Reserves.

Very Bulky models instead count as three models.

Independent characters can join other units.  They cannot, however, join units that contain vehicles or Monstrous Creatures.  They can join other Independent Characters, though, to form a powerful multi-character unit!  Independent Characters pass Look Out, Sir rolls on a 2+. A unit that contains one or more Independent Characters does not need a double 1 to Regroup if reduced to below 25% of its starting numbres, but instead tests as if it had at least 25% remaining.

Full details in BRB. Rule too long to copy verbatim.