I didn't do too much packet decoding today, instead figuring out how the animation IDs that battle packet references worked. 90% of the time with FFXIV, if you see a long ID it's probably made up of smaller IDs. In the case of the animation ID its 3 bytes of particle effect, 3 bytes of animation, and a byte for category. These categories correlate to the folders under the client/vfx folder in the game path.

From what I found:

MGK: 01
SYS: 02
LIB: 046
ITM: 05-09
GL2?: 0B
GL1: 0C
CBI: 0D
ABL: 0E
POP: 0F
CFT: 10
PIC: 14
WSC: 12

The animation IDs seem to match the particle effects so more often than not no animation will play but the particle effect will. I did figure out to look under the act folder in ever PC classes' folder for the animation IDs. Anyway here is a video of chaos thrust: