Darkness

The only Mythic Solo Hunters power in A-tier—not because it's weak, but because it's specialized. Darkness deals damage in a massive radius. It has the biggest AoE attacks in the game right now and is exceptional for crowd control, especially on wide maps like Jungle where enemies approach from multiple angles. It's ridiculously powerful for how easy it is to acquire (you'll likely get it in a few pulls). Once you do, you'll clear dungeons faster and net more experience.