Patch 1.79 added regular weekly boss battles which offer one Shim'Zar orb as a free reward and a boss crate for $4,99. This crate contains one legendary card, one Gauntlet Ticket, 3 Shim'Zar orbs and a common crate key. The boss crate is worth around $10 and good value for newer players.
Here you can find a lot of not yet released boss details datamined. Beware of Spoilers!
Here is a video playlist with every Boss Battle made by Collazo.
- Calibero (Reddit, Forum)
- Monolith Guardian (Reddit, Forum)
- Boreal Juggernaut (Reddit)
- Shinkage Zendo (Reddit)
- Umbra (Reddit, Forum)
- Cade the Desolator (Reddit, Forum)
- Solfist (Reddit)
- Orias the Heretic (Forum)
- D3C (Forum)
- Wu'Jin the Trickster (Reddit, Forum)
- Automaton 8 (Reddit, Forum)
- Archonis (Reddit, Forum)
- Malyk (Reddit, Forum)