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As a Dungeon Master, I usually steered clear of heavy use of chance during my D&D games. My preference was for narrative flow and what happened in a game to be guided by deliberate decisions rather than random chance. Recently, I opted to change my approach, and I'm truly pleased with the outcome.

The Catalyst: Observing an Improvised Tool

A well-known streamed game utilizes a DM who often asks for "chance rolls" from the adventurers. He does this by picking a type of die and assigning possible results contingent on the result. It's at its core no distinct from consulting a random table, these are created spontaneously when a player's action doesn't have a obvious conclusion.

I chose to experiment with this approach at my own session, mostly because it seemed interesting and presented a departure from my standard routine. The results were eye-opening, prompting me to think deeply about the ongoing dynamic between pre-determination and randomization in a D&D campaign.

A Memorable Session Moment

At a session, my players had just emerged from a city-wide conflict. Later, a player asked about two beloved NPCs—a pair—had lived. In place of choosing an outcome, I asked for a roll. I told the player to roll a d20. The stakes were: a low roll, both would perish; on a 5-9, only one succumbed; a high roll, they survived.

The player rolled a 4. This triggered a incredibly poignant sequence where the adventurers found the remains of their friends, still clasped together in their final moments. The party conducted last rites, which was particularly powerful due to earlier character interactions. In a concluding touch, I decided that the forms were strangely transformed, showing a magical Prayer Bead. I rolled for, the bead's contained spell was precisely what the group lacked to address another critical story problem. You simply plan such magical moments.

Improving Your Improvisation

This event caused me to question if improvisation and spontaneity are truly the core of D&D. Although you are a prep-heavy DM, your improvisation muscles need exercise. Players reliably take delight in ignoring the most carefully laid plots. Therefore, a good DM must be able to adapt swiftly and fabricate scenarios in the moment.

Using on-the-spot randomization is a great way to train these skills without venturing too far outside your comfort zone. The key is to deploy them for small-scale circumstances that don't fundamentally change the session's primary direction. As an example, I would avoid using it to determine if the main villain is a traitor. But, I might use it to decide if the party arrive right after a critical event unfolds.

Enhancing Collaborative Storytelling

Luck rolls also serves to make players feel invested and cultivate the impression that the game world is alive, evolving based on their choices as they play. It reduces the perception that they are merely pawns in a pre-written narrative, thereby bolstering the collaborative aspect of storytelling.

This philosophy has always been embedded in the original design. Early editions were reliant on random tables, which fit a game focused on treasure hunting. Even though current D&D tends to prioritizes narrative and role-play, leading many DMs to feel they must prep extensively, this isn't always the best approach.

Striking the Sweet Spot

It is perfectly no problem with thorough preparation. Yet, equally valid nothing wrong with stepping back and allowing the whim of chance to guide minor details in place of you. Control is a big part of a DM's role. We require it to run the game, yet we often struggle to give some up, even when doing so can lead to great moments.

The core recommendation is this: Do not fear of letting go of your plan. Experiment with a little improvisation for smaller story elements. It may create that the surprising result is infinitely more memorable than anything you would have planned in advance.