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In my role as a Dungeon Master, I historically avoided extensive use of randomization during my tabletop roleplaying adventures. I tended was for the plot and what happened in a game to be shaped by deliberate decisions rather than random chance. That said, I opted to change my approach, and I'm truly glad I did.

The Inspiration: Watching an Improvised Tool

An influential actual-play show features a DM who regularly asks for "luck rolls" from the players. The process entails picking a specific dice and outlining potential outcomes tied to the number. It's at its core no different from rolling on a random table, these get invented spontaneously when a player's action has no clear outcome.

I chose to experiment with this approach at my own table, primarily because it looked novel and provided a departure from my standard routine. The results were fantastic, prompting me to reflect on the perennial tension between pre-determination and improvisation in a tabletop session.

An Emotional Session Moment

During one session, my party had concluded a large-scale fight. When the dust settled, a cleric character wondered if two key NPCs—a brother and sister—had lived. Instead of picking a fate, I let the dice decide. I told the player to make a twenty-sided die roll. The possible results were: on a 1-4, both would perish; a middling roll, a single one would die; a high roll, they made it.

The die came up a 4. This resulted in a deeply moving scene where the party found the remains of their friends, still united in death. The group performed a ceremony, which was particularly meaningful due to prior character interactions. As a parting gesture, I decided that the NPCs' bodies were suddenly transformed, showing a magical Prayer Bead. By chance, the item's contained spell was exactly what the group lacked to resolve another critical quest obstacle. It's impossible to plan such serendipitous coincidences.

Improving On-the-Spot Skills

This experience caused me to question if randomization and making it up are truly the beating heart of this game. Even if you are a detail-oriented DM, your ability to adapt may atrophy. Adventurers frequently find joy in ignoring the most carefully laid narratives. Therefore, a good DM must be able to adapt swiftly and fabricate details in the moment.

Employing on-the-spot randomization is a great way to train these abilities without straying too much outside your preparation. The strategy is to use them for low-stakes circumstances that don't fundamentally change the session's primary direction. For instance, I would avoid using it to decide if the central plot figure is a secret enemy. But, I would consider using it to determine if the PCs enter a room just in time to see a critical event unfolds.

Enhancing Player Agency

Luck rolls also works to make players feel invested and foster the sensation that the game world is alive, shaping in reaction to their choices in real-time. It combats the feeling that they are merely actors in a rigidly planned story, thereby enhancing the shared nature of the game.

This philosophy has historically been integral to the original design. The game's roots were enamored with encounter generators, which fit a playstyle focused on dungeon crawling. Even though contemporary D&D frequently prioritizes plot-driven play, leading many DMs to feel they must prep extensively, this isn't always the best approach.

Finding the Sweet Spot

Absolutely nothing wrong with being prepared. However, it's also fine nothing wrong with letting go and permitting the dice to decide some things in place of you. Control is a big aspect of a DM's responsibilities. We require it to manage the world, yet we frequently find it hard to release it, at times when doing so could be beneficial.

My final recommendation is this: Do not fear of relinquishing a bit of your plan. Try a little improvisation for smaller details. The result could create that the organic story beat is significantly more powerful than anything you would have pre-written on your own.