Two different ways to approach the fight depending on what the raid needs.
Great timings for both Evang and mini ramps.
Damage Breakdown
Damage Breakdown
During the main phase, the boss does damage every 30s which is perfect for Voidweaver. Disc can send a mini ramp into every Lash.
During the intermission, every time the boss charges the wall (4 times) it's a raid-wide debuff that ticks.
At the end of the intermission, the boss lands and ticks damage until he's fully fed.
Disc Viability
Voidweaver is great. You can ramp every venomous lash - the timings are perfect.
Looking at the damage intake the natural feeling is to evang 00:30, intermission around 2:00, 3:30 and then intermission at 5:00. It would be very effective but I think that disc is better at covering the Hungering Bellows:
The raid is moving to feed the boss so very spread out. Healers will probably need to help too which means no boss uptime for melee specs. Disc evang can hit everyone and keep them healthy as they move.