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In my role as a Dungeon Master, I usually steered clear of extensive use of randomization during my D&D games. My preference was for the plot and session development to be guided by player choice as opposed to random chance. However, I opted to try something different, and I'm very happy with the result.

The Inspiration: Watching a Custom Mechanic

A well-known streamed game showcases a DM who regularly asks for "chance rolls" from the players. This involves picking a specific dice and assigning possible results based on the result. It's fundamentally no unlike rolling on a random table, these are devised spontaneously when a player's action doesn't have a predetermined resolution.

I decided to try this method at my own game, mainly because it seemed engaging and presented a change from my standard routine. The experience were fantastic, prompting me to reflect on the often-debated balance between pre-determination and improvisation in a roleplaying game.

A Memorable In-Game Example

At a session, my players had just emerged from a city-wide fight. When the dust settled, a player inquired after two friendly NPCs—a brother and sister—had survived. Rather than picking a fate, I handed it over to chance. I told the player to make a twenty-sided die roll. The possible results were: on a 1-4, both were killed; a middling roll, only one succumbed; a high roll, they both lived.

Fate decreed a 4. This resulted in a profoundly poignant scene where the party came upon the corpses of their allies, still united in their final moments. The group conducted funeral rites, which was especially meaningful due to prior story developments. As a final touch, I decided that the forms were suddenly restored, showing a spell-storing object. By chance, the bead's contained spell was perfectly what the party lacked to resolve another pressing quest obstacle. It's impossible to orchestrate this type of magical moments.

Sharpening Your Improvisation

This event made me wonder if chance and thinking on your feet are truly the essence of D&D. While you are a prep-heavy DM, your improvisation muscles need exercise. Adventurers often find joy in ignoring the most detailed plans. Therefore, a effective DM needs to be able to adapt swiftly and create content in the moment.

Using luck rolls is a great way to train these abilities without going completely outside your preparation. The trick is to use them for minor decisions that don't fundamentally change the session's primary direction. For instance, I would not employ it to decide if the central plot figure is a traitor. But, I might use it to figure out whether the party arrive just in time to see a critical event takes place.

Strengthening Collaborative Storytelling

Luck rolls also helps make players feel invested and create the sensation that the story is alive, progressing in reaction to their choices as they play. It prevents the sense that they are merely pawns in a DM's sole script, thereby bolstering the shared aspect of the game.

This philosophy has long been embedded in the original design. Early editions were filled with charts, which made sense for a game focused on treasure hunting. Even though modern D&D tends to prioritizes story and character, leading many DMs to feel they require detailed plans, that may not be the required method.

Achieving the Healthy Equilibrium

There is absolutely no problem with doing your prep. But, there is also no problem with letting go and permitting the dice to guide minor details in place of you. Control is a significant aspect of a DM's responsibilities. We use it to run the game, yet we can be reluctant to give some up, at times when doing so can lead to great moments.

A piece of advice is this: Do not fear of relinquishing a bit of the reins. Experiment with a little randomness for smaller details. You might just create that the surprising result is infinitely more memorable than anything you might have scripted by yourself.