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As a Dungeon Master, I usually steered clear of extensive use of luck during my D&D games. My preference was for narrative flow and what happened in a game to be guided by player choice rather than random chance. Recently, I opted to change my approach, and I'm incredibly glad I did.

The Spark: Watching a Custom Mechanic

A popular streamed game showcases a DM who frequently asks for "chance rolls" from the players. He does this by selecting a specific dice and defining potential outcomes tied to the number. While it's at its core no distinct from consulting a random table, these are created spontaneously when a player's action has no clear outcome.

I chose to experiment with this method at my own table, mostly because it looked interesting and provided a change from my usual habits. The experience were fantastic, prompting me to reflect on the perennial tension between pre-determination and randomization in a tabletop session.

An Emotional In-Game Example

During one session, my group had just emerged from a large-scale conflict. Afterwards, a player asked about two beloved NPCs—a brother and sister—had lived. Instead of choosing an outcome, I asked for a roll. I instructed the player to roll a d20. I defined the outcomes as: on a 1-4, both were killed; on a 5-9, only one succumbed; on a 10+, they both lived.

The player rolled a 4. This led to a incredibly poignant sequence where the party discovered the remains of their allies, forever united in death. The party held last rites, which was particularly meaningful due to prior roleplaying. As a parting reward, I chose that the remains were miraculously restored, showing a magical Prayer Bead. By chance, the bead's contained spell was perfectly what the party lacked to solve another critical story problem. It's impossible to orchestrate this type of perfect story beats.

Sharpening On-the-Spot Skills

This experience led me to ponder if chance and making it up are actually the beating heart of D&D. While you are a meticulously planning DM, your improvisation muscles can rust. Adventurers reliably take delight in ignoring the best constructed plots. Therefore, a skilled DM needs to be able to adapt swiftly and fabricate content on the fly.

Utilizing luck rolls is a great way to practice these skills without going completely outside your usual style. The strategy is to use them for minor decisions that don't fundamentally change the session's primary direction. As an example, I wouldn't use it to establish if the main villain is a secret enemy. But, I could use it to figure out whether the PCs reach a location moments before a critical event unfolds.

Enhancing Shared Narrative

Spontaneous randomization also works to keep players engaged and create the impression that the story is dynamic, evolving based on their decisions as they play. It reduces the sense that they are merely actors in a rigidly planned narrative, thereby bolstering the collaborative nature of storytelling.

Randomization has always been integral to the game's DNA. Early editions were filled with charts, which made sense for a game focused on treasure hunting. Even though modern D&D often emphasizes narrative and role-play, leading many DMs to feel they need exhaustive notes, it's not necessarily the best approach.

Striking the Healthy Equilibrium

Absolutely no issue with thorough preparation. Yet, it's also fine no issue with letting go and letting the whim of chance to determine certain outcomes in place of you. Authority is a major factor in a DM's role. We use it to manage the world, yet we can be reluctant to release it, even when doing so might improve the game.

My final recommendation is this: Do not fear of relinquishing a bit of the reins. Try a little chance for smaller outcomes. You might just create that the surprising result is infinitely more rewarding than anything you might have pre-written on your own.