spell prep codex -> A swirling cloud of shadow forms around your right hand

[Daiyon]

Looking for one of the spell prep changers that give this messaging:

First Person: A swirling cloud of shadow forms around your right hand as you prepare [Spell Name]...
Third Person: A swirling cloud of shadow forms around <Person>'s right hand as he prepares a spell...
Hidden or Invisible: A swirling cloud of shadows forms in midair.