A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
A player, 9 June 2013
Yuribata's Butterfly: Other player's Battle actions must target a Butterfly Personality at this battlefield, if legal. After another player's Battle action targets this card: Destroy this card.
Wide Valley: Before an action's effect destroys a card in a unit: Negate the destruction.
Rampant Paranoia: Until your next turn begins, other players' cards will not destroy your Personalities in a defending army.
So it's a fairly straight forward question, do Rampant Paranoia and Wide Valley allow me to have infinite butterfly protection?
Brook Cunningham (rules official), 9 June 2013
Yuribata's Butterfly: Other player's Battle actions must target a Butterfly Personality at this battlefield, if legal. After another player's Battle action targets this card: Destroy this card.
Wide Valley: Before an action's effect destroys a card in a unit: Negate the destruction.
Rampant Paranoia: Until your next turn begins, other players' cards will not destroy your Personalities in a defending army.
So it's a fairly straight forward question, do Rampant Paranoia and Wide Valley allow me to have infinite butterfly protection?
No, sorry.
Wide Valley stops destruction from actions, but Butterflies are destroyed by their own trait.
And Rampant Paranoia stops destruction from other player's cards, but the Butterflies trait is on itself, and its your own card.