How good is this trinket compared to the old affli combination of light of the cosmos+Essence of terror? I'm thinking of swapping my LFR essence of terror for this trinket, but I'm not exactly sure what the uptime on the proc is at the moment. Since the essence of terror lasts more but procs less often, I suppose this trinket is better for affli if it's proc-rate is as high as the light of the cosmos.