Useful for Frog Ambuscade? :o
I dunno Suph. Carby Gun is white elemental damage, just like Gastra Trueflight is white elemental damage.
However, if I team-up with Alchemist NPC Monberaux, we could synergize some Aragoneu White Lightning, aka: Moonshine.
I think if I feed Carby some Moonshine Stewpot, the resultant Carby ammo would be lightning based and hence good in Frog Ambu.