Owls!
Multiple owls sent with the same message. Message is hexed with invisible ink, only revealed by a key phrase which is known only to the addressees (which is "Do you speak moo?") Anyone else tries to open the message and all they'll get is an overly loud howler with a screeching voice. Messages are sent to:
Braden Capper
Kaida Weasley
Bryn Abercrombie
Ozzie Hopkins
Haley Macmillian
Cory Tanner
Ashley Davies
Frank Longbottom
Addy Weasley
Alice Longbottom
Lily Potter
( Do you speak moo? )
Braden Capper
Kaida Weasley
Bryn Abercrombie
Ozzie Hopkins
Haley Macmillian
Cory Tanner
Ashley Davies
Frank Longbottom
Addy Weasley
Alice Longbottom
Lily Potter
( Do you speak moo? )