Who’s this ingredient for

From what i know to evolve Tridrake you need Vorabook…am sure other legendary might need him as ingredient too though…

I need it for Emeraleon too

Banedragon and Bazilogon also need it, and I’m guessing that most of the new legends need it too. You can get it on Survival on the Fittest and it was also available on the IC during the first pair of times it was held.