(Moving this line to its own thread, because reasons.)
Guiverna was initially intended to be a one-off character to have fun with in the Covenant of Dopplegangers thread. Unfortunately, my genius had other ideas, and now I want to continue playing her (most probably in Sa Dragonera, but it all depends on how that thread plays out). I've got a character sheet mostly done (still need to work on her spell list and advance her four or five years), but there is one original Virtue I want her to have, but I want to have y'all vet and approve it first.
Basically, Guiverna should be a Parseltongue. But Animal Ken (which has the same basic effect, but for all animals) is only a Minor Supernatural Virtue.
Since "only snakes" would be a very limited restriction, what about the following:
Parseltongue (Minor, Supernatural)
[tab][/tab]You can communicate with serpents as if they were human beings, and make them do your will. This Virtue confers the Ability Parseltongue 1.
[tab][/tab]You can communicate with serpents as if they were human beings. Treat your score in Parseltongue as your score in a language that the serpent speaks fluently in order to determine how well you can communicate, and you can use Animal Handling as a substitute for any social abilities affecting humans. Other people cannot understand your communication with the serpents.
[tab][/tab]This ability also allows you to control a serpent's actions. Make a Com + Parseltongue Stress Roll, with an Ease Factor equal to the Rego Animal base guideline (p. 120); if the target has Magic Resistance, the Ability's effective Penetration is equal to the amount the character makes the Parseltongue Roll by to control the serpent. (Note that communication does not affect the serpent, and thus no Penetration is needed.)