For 5e Game Masters running high-level campaigns (levels 11–20) who are tired of watching their villains die in round two

Your Party Can Delete Any Boss. Here's One They Can't Cheese.

A free, ready-to-run, three-phase final boss built to survive a tier 3 party for 8–10 rounds without blanket immunities or fudged dice. Download it, run it this week, and give your campaign the finale it's earned.

Nova-Proof Vol. 1: The Bellwright Sovereign hardcover book showing a crowned sovereign under a giant cracked bronze bell in a moonlight cathedral, alongside the open 5e boss stat block and battle map

The Bellwright Sovereign · 17 pages · ready to run

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Sound Familiar?

You spent months building toward the villain. Then the wizard cast Banishment on turn one. Or the paladin crit-smited it into dust after Hold Monster. The table cheered, and you quietly flipped to your notes. High-level characters are built to delete single monsters — and most official bosses weren't built to survive them.

What you get

Five Reasons Your Villain Survives the Night

A Boss That Survives the One-Shots

Separate HP pools for each phase mean one massive nova can't skip the fight. Banishment, Hold Monster crits, Forcecage, Polymorph and summon swarms each meet a specific, fair counter.

Fair, Not Cheap

Your players' combos still work and still feel clever. They just don't end the fight alone. Crits land in full in the final phase, and built-in DM fairness rules keep it honest.

A Final Phase Every Player Matters In

A ticking countdown and a non-combat objective give every character something heroic to do besides deal damage.

Drops Into Your Campaign

Use her as your villain's final form, the power behind the throne, or a standalone climax. Reskin her as a lich, dragon or fey queen, and the mechanics still work.

Ready to Run Tonight

17 pages: three stat blocks, lair actions, arena map, read-aloud text, scaling for levels 11–20 and 3–6 players, two magic items, and a printable DM cheat sheet.

Look Inside the PDF

Page preview: Phase 1 Stat Block
Phase 1 Stat Block
Page preview: "Counters to Common One-Shot Combos" table
"Counters to Common One-Shot Combos" table
Page preview: DM Cheat Sheet
DM Cheat Sheet

"Every classic boss-killer still does something. It just doesn't end the fight on its own."

3Phases
8–10Rounds
11–20Levels
60–90Min of Play

Questions, Answered

Give Your Campaign the Ending It Deserves

Free PDF. No catch. Run it this week and watch your table finally sweat.

Free PDF Download

Plus future Nova-Proof volumes in your inbox. Unsubscribe anytime.

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