Specifically the meta event revolving around fighting the Death-Branded Shatterer. This was a really cool event (although I personally wish for slightly more involved meta events, a la Chak Gerent and Auric Basin). One thing that really made me happy was the rare cosmetic reward you added as a possible drop. This is something I see people getting quite excited by and already you will not fail to find people flocking to this event. Is it easy to create infusions as rewards? What might make you hesitate to add too many "ultra-rare" rewards?
Overall the episode was excellent on all fronts (art, story, new mastery and sustainable content), thank you!