Trying to figure out the right formula here for when a card and a rule conflict.
To do this, let's compare conditions and events.
ConditionThe rulebook says:
"A condition is always played during the fellowship phase (if it is a Free Peoples card) or the Shadow phase (if it is a Shadow card), even if it provides a special ability that is performed during a different phase."
But,
Some Secret Art of Flame and
Dead Marshes let you play other conditions during a different phase.
So with conditions, by default, they must be played during Fellowship or Shadow phase, but cards (either the card itself, or another card) can let you overrule that and play them during a different phase.
EventThe rulebook says:
"You cannot play an event during a phase that does not match its phase action."
But,
Diversion and
For the Mark say you can play themselves in a different phase.
Would
Bilbo, Bearer of Things Burgled allow you to play an event, specifically
NFFATROD, during a different phase?
Would
Pass of Caradhras allow you to play
Caradhras Has Not Forgiven Us, during a different phase?
Would
Host of Moria allow you to play
Drums in the Deep during a different phase?