Growl, is an off-gcd spell to activate bearform ans Fae Silence glyph is you have it.
(all credit to Mingyo stream and chat)
It is also useful when you want to pop bearform offgcd, like with Might of Ursoc.
The macros I have been using:
/cast [modifier:alt,@focus,nostealth] Mighty Bash
/cast [stealth,stance:3,modifier:alt,@focus] Pounce
/cast [nomodifier,combat] Growl
/use [nomodifier,nostance:1]!Bear Form(Shapeshift)
#showtooltip Might of ursoc
/cast Might of Ursoc
Same goes for 'catdance' vanish,
#showtooltip Incarnation: King of the Jungle
/cast !Force of Nature
/cast Incarnation: King of the Jungle
/cast [noform:3] Cat Form
/cast [noform:3] !Prowl