Getting Past the Final Fight in the Underworld
The last boss fight in the Novus update isn't particularly hard if you come prepared, but it punishes lazy builds and people who don't understand what the encounter actually does. Most players breeze through Novus and just walk in expecting it to be a normal boss with extra health. It isn't. The final encounter is against the Empress of the Underworld, Tezcatlipoca. She appears in the Underworld deck and has multiple phases. The core mechanic revolves around her sun and moon aura system, which flips throughout the fight and changes which damage types she favors and what buffs she applies to herself and her summons. Here's how I'd approach it practically. Bring high spell resist across the board — at least 80% in both fire and dark. You don't need perfect numbers on everything else. Ice and life resist can sit lower because she doesn't spam those schools heavily. My personal recommendation is running a build that focuses on survivability over burst. This fight drags on longer than most final bosses because she heals herself at specific thresholds rather than dying to raw damage alone.
When she hits 50% health and again at 25%, she enters a reinforced state where all damage dealt to her drops significantly for a short window. During those windows, your DPS effectively plummets by about 60% or more. This is the most common reason players waste time or lose the fight — they panic and try to force kills during reinforced phases instead of playing conservatively and preserving health. Just hold off on your big spells until the reinforcement wears off. It usually lasts around 15 to 20 seconds. She also summons minions, primarily Underworld Knights and a couple of mages. These adds are not trivial. The knights have decent health pools and hit hard physically, while the mages can heal the Empress if you let them survive too long. Prioritize clearing adds quickly, ideally within three to four turns, or you'll be fighting a healing boss with increasing numbers. Death magic is excellent here for finishing minions fast, but any school with a solid AoE works fine. I ran into a specific issue the first time I tried this fight solo on a magic knight build. I was running mostly fire spells because the Empress is weak to fire, but I kept getting overwhelmed by her combined fire and dark attacks once she started flipping between auras. The workaround was straightforward — I switched my primary school to ice for tanking and added a secondary blood magic setup for healing, then just played patient. Dropped the fire-focused damage build entirely. The fight went from a 12-minute struggle to about four minutes on the second attempt.
One thing beginners consistently miss: the Empress's aura flip is predictable. Pay attention to the visual cue on the boss model. When she shifts to her aggressive aura, she becomes more dangerous but also takes slightly more damage from spells. When she's in her defensive aura, she tanks better but hits softer. Timing your big rotation to coincide with her aggressive phase can cut the fight significantly. It's not a massive swing on its own, but it adds up over a long encounter. Crowd control matters more than people realize. A single turn of freeze or shuffle on the Empress during a reinforced phase can be the difference between surviving a wipe and walking away with full health. If your deck doesn't include at least one reliable CC spell, consider borrowing from a friend or switching schools for this fight. A shadow or death wizard with freeze available is a strong choice specifically for this encounter. The reward for completing this fight includes a unique cosmetic set and some useful gear, but the real takeaway is understanding the pacing. This isn't a DPS race. It's a sustain check. Players who treat it like a speedrun tend to die. Players who play it conservatively, manage their mana carefully, and wait for the right windows to push finish it easily.
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One honest limitation worth noting: solo attempts on lower levels can feel unnecessarily punishing if you're not fully geared. The Empress's damage scales in a way that catches underleveled players off guard. If you're below level 70 or so, bringing a friend for the last phase makes a noticeable difference. There's no shame in pairing up on a boss that's designed to test endurance rather than skill.