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When I am a DM, I usually avoided extensive use of luck during my Dungeons & Dragons games. I preferred was for narrative flow and session development to be determined by deliberate decisions rather than random chance. However, I opted to try something different, and I'm incredibly pleased with the outcome.

The Inspiration: Seeing a Custom Mechanic

An influential podcast utilizes a DM who often asks for "fate rolls" from the participants. He does this by choosing a specific dice and defining possible results contingent on the roll. While it's at its core no different from rolling on a random table, these get invented on the spot when a course of events has no predetermined resolution.

I decided to try this technique at my own game, mostly because it seemed interesting and provided a break from my normal practice. The experience were eye-opening, prompting me to think deeply about the ongoing tension between preparation and randomization in a D&D campaign.

A Memorable Story Beat

In a recent session, my party had just emerged from a massive fight. Afterwards, a player wondered if two beloved NPCs—a sibling duo—had lived. Instead of choosing an outcome, I let the dice decide. I told the player to roll a d20. The stakes were: a low roll, both would perish; on a 5-9, only one would die; a high roll, they made it.

Fate decreed a 4. This resulted in a profoundly emotional sequence where the adventurers came upon the remains of their friends, still united in death. The cleric performed funeral rites, which was especially meaningful due to previous story developments. In a concluding gesture, I improvised that the remains were suddenly restored, containing a spell-storing object. I rolled for, the bead's magical effect was perfectly what the party lacked to resolve another major quest obstacle. It's impossible to plan these kinds of perfect coincidences.

Sharpening DM Agility

This event made me wonder if chance and making it up are actually the essence of this game. Even if you are a prep-heavy DM, your improvisation muscles need exercise. Players frequently find joy in upending the best constructed narratives. Therefore, a effective DM needs to be able to think quickly and invent details in real-time.

Utilizing similar mechanics is a fantastic way to train these abilities without venturing too far outside your comfort zone. The strategy is to apply them for low-stakes circumstances that have a limited impact on the overarching story. For instance, I would not employ it to decide if the king's advisor is a traitor. However, I would consider using it to decide whether the party reach a location just in time to see a key action occurs.

Strengthening Shared Narrative

Spontaneous randomization also works to maintain tension and foster the sensation that the game world is responsive, shaping according to their actions as they play. It reduces the perception that they are merely pawns in a pre-written script, thereby enhancing the cooperative aspect of roleplaying.

This philosophy has historically been part of the game's DNA. The game's roots were enamored with random tables, which suited a game focused on exploration. While modern D&D often prioritizes narrative and role-play, leading many DMs to feel they require detailed plans, it's not necessarily the required method.

Finding the Sweet Spot

Absolutely no issue with thorough preparation. Yet, equally valid no problem with relinquishing control and letting the dice to guide minor details in place of you. Direction is a major aspect of a DM's responsibilities. We require it to manage the world, yet we frequently find it hard to release it, even when doing so can lead to great moments.

A piece of suggestion is this: Don't be afraid of relinquishing a bit of your plan. Experiment with a little improvisation for minor story elements. The result could find that the surprising result is infinitely more memorable than anything you could have scripted on your own.