Initiative: (1d20)[20]
Action: Casting Death and Decay, 30 foot cylindrical radius, on an area that'll catch the most raptors.
It's also Contagious so they can spread it to nearby Raptors. All infected have to take DC 18 Toughness check.
*Think* I'm not sure how you're treating surrounding flora, whether they're 'objects' or living things that also need to take Toughness checks lest they rot away too. (And then spread it to surrounding flora via Contagious)