How much time does Beast Change take?

[Magicpockets]

Quick question: How much time does Beast Change take? Is it a full exchange? A supplemental action? Maybe more?

Is there a RAW answer to this?

[Tedronai]

I'm away from books at the moment, but I believe it takes a supplemental action.

[narphoenix]

Given that there exists a stunt on the custom list to make supplementary, I think it's a full action by default.

[Taran]

True shape shifting takes longer than beast change for more complex things...taking several exchanges   But it says shifting into animals and humanoids is a supplemental.  So I take that to mean beast change is also a supplemental.

[Troy]

In the fiction, it always seems like Billy takes no time at all to transform into a wolf... no longer than it takes to pull off a t-shirt and drop trow.

[Tedronai]

The Custom Stunt list is not meaningfully fact-checked.  The existence of a stunt there should not be taken as indication of RAW.
If the power itself does not specify an action type, then the Shapeshifting section's intro states it to be supplementary.

[Taran]

YS pg 177

Under True Shapeshifting [–4]

Multi-Form. You may take on nearly any
humanoid or beastly form as a supplemental
action. Changing into something else—say,
a tree, a vacuum cleaner, a water bed—takes
a longer amount of time, usually several
actions, or even minutes, depending on how
different.

I added the bolded.  I use this ruling for beast shape.

[Cadd]

Unless explicitly noted otherwise, shapeshifting
may be done as a supplemental action.

This sort of settles it, as far as I see it. Beast Change does not "explicity note" how fast a change is, so the above general rule should be applied.

[Sanctaphrax]

Indeed.

If a stunt implies otherwise, that stunt has a problem. A problem I should probably fix.

Which stunt is it?