Ravenous prideling has been criminally underrated, on a pet like this which absorbs over 120 per round, say you currently don't have ikky, like me some days ago, or other black claw + flock pets, but for example you have flock pets like falcosaurs, since black claw is necessary to break through his shield, I used the ravenous prideling's disruption to remove the shield, swapped to falcosaur, did serious damage, he only did shield again after 5 rounds, dispelled and finished him off, I like creativity, surprised I haven't seen this anywhere.
You can actually just 2 man it with Direbeak and Chrominius, use Falcosaur Swarm, then predatory strike. After switch to chrominious and if you are lucky you should get the howl surge of power combo off. Then after chrominious dies just finish off with direbeak predatory strike.
I found this to be one of the mot frustrating battles out of all of the nazjatar ones. I used 3 call darkness fliers (all P/P or P/S breeds. the S/S ones didn't have the damage to finish him off, and would die with him still at around 3-400 hp). priority 1: keep darkness up. priority 2: cast nocturnal strike priority 3: cast savage talon/peck depending on which one the pet has
DavidG's script seems better. Unfortunately, passing on round 5 as a hard rule can result in the strait failing if your first pet is crit and dies on round 4. The script made Chrominius come in and pass on round 5, taking another hit, and he died before he could use Surge of Power.