Like Cloak the Gathering and Hidden Lurker before them, yes.
> examples are coordinated attack and most/all? of the blood brothers
Coordinate attacks is a combat card, not an action modifier.
> cards. Echo of the Harmonies states it must be played by another
> vampire, what about Madrigal? There are more examples but I can't think
Action Modifiers can only be played by the acting minion [1.6.3.2]
(Unless card text says otherwise, of course).
> of them right now, the Brothers ones are the big ones.
> If they are meant to be played another minion who can play them, can
> a tapped vampire? what about a torpored vampire?(the rulebook says they
> may play modifers to their actions but what about others actions?
Tapped vampires can play action modifiers and combat cards.
Torpored vampires can only play action modifiers when acting (as you note).
Torpored vampires cannot play combat cards (because they cannot get into
combat - the non-combatant combat cards all require a "ready" minion to
play by card text - except for Nosferatu Putresence, which is not played
by a minion at all).
--
LSJ (vte...@white-wolf.com) V:TES Net.Rep for White Wolf, Inc.
Links to revised rulebook, rulings, errata, and tournament rules:
http://www.white-wolf.com/vtes/
Just card text.
Without explicit card text, a combat card can only be played by a combtatant.