Expendable Muscle

Expendable Muscle (Summons of the Deep
F105)reads, “If Expendable Muscle would
be wounded or go insane, instead attach it to a
character you control ...” If Expendable Muscle
attaches to a character you control due to its
own ability, is this considered to be a character
leaving play for the purposes of Dreamlands
Fanatic (Dreamlands 47F), which reads
“Response: After an opponent’s character leaves
play, put Dreamlands Fanatic into play from
your hand.”?
No. Expendable Muscle is never considered
to have left play. It has become an
attachment support card. Therefore,
Dreamlands Fanatic will not trigger.

What happens when Expendable
Muscle (Summons of the Deep F105)
and another friendly character
are committed to a story where all
characters are wounded simultaneously
by Dynamite (Summons of the Deep
F42)?

Expendable Muscle’s ability is
a passive replacement effect.
Expendable Muscle’s ability replaces
Dynamite’s wounding effect with an
“attach to a character you control”
effect for Expendable Muscle. So
when Dynamite finishes resolving
Expendable Muscle becomes an
Attachment support card that grants
Toughness +1, and attaches it to a
character you control. You could not
however attach it to any other character
that was wounded by Dynamite since
they have all received their wounds at
the same time that Expendable muscle
becomes an Attachment support card.