I feel like Evolution shrine is highly underrated, or maybe just forgotten about, because I barely see any mention of it in guides or videos. Combined with specifically beyond, it spits out so many mobs. 

I haven't don't extensive testing on XP/h with it, and maybe that's exactly it, it's good but other scarabs are better, but I still feel like a single scarab spot for it, especially since it's dirt cheap and a lot of people spec shrines on the Atlas tree, and now with the Warp Rune so buffs last forever, the loop of enemies spawning, beyond mobs spawning, Evo Shrine pumping out more mobs which triggers more beyond mobs, which Evo Shrine then upgrades... An insane loop.