Dark Charm is the OL card that causes most confusion in the community when it comes to associated rules.

Thus, I am trying to summarize all the stuff around including FAQ, uFAQ, etc.into one condensed set of (hopefully) clear rules.

Please give me some feedback on what I might have missed and how readability can be further improved.

Thanks!

Here we go:

Dark Charm, Dark Host, Out of Darkness and Treacherous Shadows

General considerations
Dark Charm, Dark Host, Out of Darkness and Treacherous Shadows share similar mechanics. Heroes under the effect of one of those cards are called charmed heroes. Charming a hero does not cause the hero to be activated . The effect of the card used to charm the hero has to be resolved immediately . For the duration of the effect the hero is considered to be a monster and no longer a hero for most purposes. Overlord player and hero player can interact with the charmed hero in different ways as specified below.

Overlord player

Overlord cards: Overlord cards and plot cards that target a hero cannot be played on a charmed hero. Overlord cards that refer to a monster activation cannot be used.

Movement: A charmed hero follows the same movement rules as monsters: He cannot move through spaces with hero figures, but he can move through spaces with monster figures.

Combat: If the Overlord forces the charmed hero to attack, he may spend SURGES on surge abilities of the charmed hero. The Overlord cannot force the charmed hero to equip or unequip items or use search cards. The Overlord cannot force the charmed hero to spend FATIGUE or exhaust cards. The Overlord cannot force the charmed hero to use abilities which include an element of choice (indicated by a "may", "use this card to" etc.). Passive effects of abilities that do not include an element of choice are still in effect.

Special cases: Runic Knowledge can still be used during an attack of a charmed hero as in this case the overlord is not forcing the hero to suffer fatigue. Instead, he is spending a SURGE on an ability that happens to cause the hero to suffer 1 FATIGUE. A charmed Reanimate does not benefit from Vampiric Blood.

Hero player

Combat: A charmed hero forced to attack himself may use effects to re-roll his attack dice to possibly reduce the damage. Then, the charmed hero rolls his defense dice. He can also use most items, abilities, feats and class skills modifying defense results (e.g. granting additional defense dice of adding SHIELDS to defense rolls) as long as these do not specify that they can only be used by a Hero (e.g. Glory of Battle). The attack is resolved as usual.

Special cases: The hero ability of a charmed Leoric is still active, possibly reducing his own attack by one HEART.

Overlord player

Overlord cards: Overlord cards and plot cards that target a hero cannot be played on a charmed hero. Overlord cards that refer to a monster activation cannot be used.

As far as I know a lot of Overlord cards can be played on a dark charmed hero (Dark Might, Dark Fortune, Critical Blow, etc.). But since Dark Charm does not give you activation you cannot play cards that can be played during activation (Frenzy, Dash, etc.)

Thanks for your feedback. Yes, the cards you mention can be played.

Rather than listing all the (future) overlord cards that could be played on a charmed hero, I decided to specify conditions that prohibit the use of certain cards. Those are cards that "target a hero" (because the charmed hero is a monster) or depend on a "monster activation" (charming does not result in an activation).

Do I need to rephrase this to make this more apparent?