It’s the boss battle of the adventure: Our players face the big bad boss they’ve been chasing for sessions. We’ve prepared meticulously—an action-packed stat block, the perfect lair, environmental hazards to up the stakes. Roll initiative! The players go first. A paladin steps up, lands a critical hit, pours in a smite, and… the boss dies before they even get a turn.

For us DMs, moments like this can be a bit of a letdown. We spent time and effort setting up an epic battle, only for the boss to go down before it even starts. So, what can we do in this situation? Let’s explore some options.

Option 1: Let It Happen

One approach is to let the boss’s instant death stand. After all, it’s a high point for the players and makes them feel powerful. There’s satisfaction in knowing their characters can take down a dangerous enemy just like that. However, this shouldn’t happen too often. The occasional one-shot is memorable, but we want boss battles to feel epic and challenging at the end of an adventure.

Option 2: Empower the Lieutenants

Okay, the boss is dead. What now? If we still want to give our players a challenging encounter, we could boost the boss’s allies. Increase their HP, add extra attacks and damage to make the combat a challenge even with the boss dead. Here’s a dirty trick: Give one of the lieutenants the boss’s stat block. Maybe a loyal lieutenant or an ambitious underling steps up, seizing the opportunity to become the new leader. This can keep the tension high but it also takes away some of the players agency.

Option 3: Trigger a New Combat Stage

Instead of letting the battle end, we can use the boss’s death as a trigger for a new phase in the combat. When the spider queen falls, maybe dozens of smaller spiders begin to swarm from the walls. This type of shift keeps the encounter dynamic, and gives the players new challenges after they’ve defeated the boss.

Aftermath: Reflect and Adjust

Whatever we do, after a boss got one-shot, we should reflect on the encounter’s difficulty. If players tend to one-shot bosses more often, it might be time to increase the base line difficulty for our encounters. Are the characters wielding powerful magic items or combining strong abilities? One option to raise the difficulty is to treat the party as if they’re one level higher when balancing encounter difficulty.

Tips for Boss Survival

To avoid one-shots in future boss battles, here are a few strategies to keep bosses on their feet (and our players on theirs):

• Add More Monsters: Shield the boss with golems or other minions who intercept attackers.
• Defensive Actions: Add reactions or legendary actions to help bosses stay alive between turns.
• Damage Sharing: Use creatures or objects, like magical pillars, that absorb part of the damage dealt to the boss, forcing players to either destroy them or focus on the boss.
• Illusory Duplicate or Clone: Add a magical duplicate or clone of the boss to soak some of the characters’ abilities. Use this sparingly, however, as it can be frustrating if players feel like they’ve wasted resources on a fake boss.

Conclusion

A boss battle can be the most thrilling part of any campaign, and while it’s occasionally fun for players to drop a boss with a single blow, we also want to keep these fights epic and memorable. With a few tricks up our sleeves, we can balance letting the players feel powerful while keeping the climactic fights challenging and engaging.