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In my role as a DM, I usually steered clear of heavy use of randomization during my Dungeons & Dragons adventures. My preference was for narrative flow and session development to be determined by player choice rather than the roll of a die. That said, I chose to change my approach, and I'm very glad I did.

The Inspiration: Observing a Custom Mechanic

A popular podcast features a DM who regularly asks for "luck rolls" from the participants. He does this by picking a type of die and assigning potential outcomes tied to the number. It's fundamentally no unlike using a pre-generated chart, these are devised on the spot when a course of events lacks a clear outcome.

I opted to test this method at my own table, primarily because it appeared novel and provided a change from my usual habits. The results were eye-opening, prompting me to reflect on the perennial tension between planning and randomization in a roleplaying game.

An Emotional Story Beat

During one session, my group had concluded a city-wide fight. Afterwards, a cleric character inquired after two beloved NPCs—a pair—had survived. Rather than choosing an outcome, I handed it over to chance. I asked the player to roll a d20. The possible results were: a low roll, both died; a middling roll, a single one would die; a high roll, they survived.

Fate decreed a 4. This triggered a profoundly emotional moment where the adventurers discovered the corpses of their friends, forever holding hands in death. The group conducted funeral rites, which was especially significant due to prior character interactions. As a final gesture, I decided that the NPCs' bodies were strangely transformed, showing a enchanted item. I rolled for, the bead's contained spell was exactly what the party required to address another major quest obstacle. You simply plan these kinds of magical coincidences.

Honing Your Improvisation

This event led me to ponder if chance and making it up are truly the core of this game. While you are a meticulously planning DM, your skill to pivot need exercise. Players reliably excel at upending the most detailed narratives. Therefore, a good DM must be able to think quickly and create scenarios in the moment.

Employing similar mechanics is a excellent way to train these talents without straying too much outside your usual style. The key is to apply them for small-scale situations that don't fundamentally change the session's primary direction. As an example, I would avoid using it to establish if the main villain is a traitor. But, I might use it to determine if the PCs enter a room moments before a major incident unfolds.

Empowering Shared Narrative

Luck rolls also works to maintain tension and foster the feeling that the story is dynamic, progressing in reaction to their choices in real-time. It reduces the feeling that they are merely characters in a pre-written script, thereby strengthening the shared foundation of the game.

This philosophy has historically been embedded in the original design. The game's roots were reliant on random tables, which made sense for a playstyle focused on exploration. Although current D&D frequently focuses on story and character, leading many DMs to feel they must prep extensively, this isn't always the only path.

Striking the Healthy Equilibrium

It is perfectly no issue with being prepared. But, it's also fine no issue with stepping back and allowing the rolls to decide some things in place of you. Authority is a major factor in a DM's role. We require it to facilitate play, yet we frequently find it hard to cede it, at times when doing so could be beneficial.

My final suggestion is this: Have no fear of temporarily losing your plan. Embrace a little chance for inconsequential details. You might just discover that the surprising result is far more powerful than anything you would have planned by yourself.