Wild Rider

A model with this rule has Fear, Forest Strider, Magical Attacks, Immunity (Psychology). In addition, they have a Ward save (5+) which becomes a Ward save (6+) against Magical Attacks. However, units of Forest Spirits may only be joined by characters that are also Forest Spirits.

Models with this special rule have Dodge (6+)
special rule in close combat. However, this cannot be
used against enemies that attack before the model with
Elven Grace.

The Models have +1 A during a turn in which they charge into combat. Unless otherwise noted, this only applies to rider in case of Cavalry or Monstrous Cavalry.

Vanguard
Fast Cavalry automatically have Vanguard.

Free Reform
Unless it charges, Fast Cavalry is allowed to reform twice during its move without losing any Movement; once before they move, and at the end of their move. The unit may do this even if it marches, provided that no model ends up moving a number of inches higher than double its Movement value.

Fire & Flee
A unit of Fast Cavalry armed with missile weapons can choose Fire and Flee as a charge reaction. If it chooses to do so, the unit will first fire upon the target following the rules for Stand & Shoot. After this, the unit makes a flee move. However, it may not use its Swiftstride if it does so, and the normal -1 To Hit penalty for moving and shooting still applies.

Feigned Flight
A unit of Fast Cavalry that chooses Flee or Fire & Flee as a charge reaction does not cause Panic from fleeing through friendly units and automatically rally in its next Compulsory Movement Phase (unless it is forced to Flee again from another source). In addition, it is then also free to move during the remaining moves part of the Movement phase. The unit is also free to shoot as normal (but always counts as having moved). Note that if the flee move of the Fast Cavalry does not take them beyond the charge reach of their enemies, the unit suffers casualties as normal.

Fire on the March
Fast Cavalry armed with missile weapons are experts at shooting from horseback and can therefore shoot during a turn in which they marched or reformed (providing their weapon doesn't have Move or Fire). However, the normal -1 To Hit penalty for moving and shooting still applies.

Characters
A character model that joins a unit of Fast Cavalry gains Fast Cavalry as long as they stay with the unit. Characters may only join Fast Cavalry with the same Troop Type as them.

Armour Saves
Units containing one or more models with a close combat armour save better than 5+ and/or barding cannot use Fast Cavalry.

Frenzied troops gain +1 A and Immunity (Psychology).

Berserk Rage
A unit that includes one or more Frenzied models can only choose Hold or Stand & Shoot as a charge reaction.

If, during the Charge sub-phase, a unit that includes one or more Frenzied models could declare a charge, then it must do so unless a LD test is passed. If the LD test is failed, the Frenzied unit must declare a charge against the nearest viable enemy.

A unit that includes one or more Frenzied models cannot choose to restrain pursuit if it beats a foe in close combat. It will either pursue (if the enemy has fled) or overrun (if the enemy was wiped out in combat). Note that if the enemy is wiped out in combat but the Frenzied unit did not charge that turn (or if the combat was the result of a pursuit or overrun charge in the same turn), then the Frenzied unit will reform as normal as it has no other choice of action.

Losing Frenzy
Frenzy can be lost. Models retain their Frenzy for the entire game unless beaten in combat.

Models with Strider will normally have a subset of Strider that is mentioned in the brackets. The rule only applies in terrain of the specified type. Models with Strider treat that piece of terrain as open ground for the purposes of Movement, meaning they ignore any M penalties or Dangerous Terrain tests otherwise caused by it. Note that they still follow the rules for that terrain type in terms of combat.