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When I am a DM, I usually steered clear of significant use of randomization during my D&D games. I preferred was for the plot and what happened in a game to be guided by deliberate decisions rather than random chance. However, I opted to alter my method, and I'm truly happy with the result.

The Inspiration: Observing a Custom Mechanic

A popular actual-play show features a DM who often requests "fate rolls" from the adventurers. He does this by selecting a polyhedral and assigning potential outcomes based on the result. This is essentially no distinct from rolling on a pre-generated chart, these get invented in the moment when a character's decision has no obvious outcome.

I decided to try this method at my own table, primarily because it seemed interesting and presented a departure from my usual habits. The results were remarkable, prompting me to reconsider the ongoing dynamic between preparation and randomization in a D&D campaign.

A Memorable In-Game Example

At a session, my group had just emerged from a large-scale battle. Afterwards, a player inquired after two key NPCs—a brother and sister—had lived. In place of picking a fate, I let the dice decide. I asked the player to make a twenty-sided die roll. The possible results were: a low roll, both died; a middling roll, only one would die; a high roll, they both lived.

The player rolled a 4. This resulted in a deeply moving scene where the characters discovered the bodies of their friends, still holding hands in death. The group conducted funeral rites, which was uniquely meaningful due to earlier story developments. As a final reward, I chose that the NPCs' bodies were strangely restored, containing a magical Prayer Bead. By chance, the bead's magical effect was exactly what the party needed to solve another major quest obstacle. It's impossible to plan these kinds of serendipitous coincidences.

Sharpening DM Agility

This experience led me to ponder if chance and making it up are truly the beating heart of D&D. Even if you are a prep-heavy DM, your skill to pivot need exercise. Groups frequently take delight in upending the most detailed plans. Therefore, a effective DM must be able to adapt swiftly and create scenarios in the moment.

Using on-the-spot randomization is a excellent way to develop these skills without straying too much outside your preparation. The strategy is to use them for minor circumstances that have a limited impact on the campaign's main plot. To illustrate, I wouldn't use it to determine if the main villain is a secret enemy. Instead, I might use it to figure out whether the PCs arrive moments before a major incident unfolds.

Empowering Collaborative Storytelling

Spontaneous randomization also helps make players feel invested and cultivate the impression that the game world is responsive, evolving according to their actions as they play. It prevents the perception that they are merely pawns in a pre-written story, thereby strengthening the collaborative nature of storytelling.

This philosophy has historically been part of the original design. Original D&D were filled with charts, which made sense for a playstyle focused on treasure hunting. Even though current D&D often emphasizes narrative and role-play, leading many DMs to feel they need exhaustive notes, this isn't always the required method.

Striking the Right Balance

It is perfectly no problem with doing your prep. However, equally valid no problem with letting go and letting the dice to determine certain outcomes instead of you. Control is a big part of a DM's role. We need it to run the game, yet we often struggle to give some up, at times when doing so can lead to great moments.

A piece of suggestion is this: Don't be afraid of temporarily losing control. Embrace a little chance for inconsequential story elements. The result could discover that the unexpected outcome is significantly more rewarding than anything you would have pre-written on your own.