Lesser Telepathy

Cantrip (This spell consumes no mana, but can
only be cast if you have at least 1 mana available
of the corresponding color. Only 1 spell with
Cantrip can be active at a time).
You can telepathicaly deliver short messages to
allies in Close Range. They must allow for your
mind intrussion.

If you want a secret to be kept a secret, don't even
whisper it