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When I am a game master, I usually avoided significant use of chance during my D&D adventures. I tended was for the plot and what happened in a game to be determined by player choice rather than the roll of a die. That said, I decided to change my approach, and I'm very glad I did.

The Inspiration: Seeing a Custom Mechanic

A well-known actual-play show features a DM who often asks for "fate rolls" from the adventurers. He does this by selecting a polyhedral and outlining potential outcomes tied to the roll. This is essentially no unlike using a random table, these are devised in the moment when a player's action has no obvious resolution.

I opted to test this technique at my own game, mostly because it looked engaging and presented a change from my normal practice. The results were eye-opening, prompting me to reconsider the perennial balance between planning and randomization in a D&D campaign.

A Memorable Story Beat

In a recent session, my party had just emerged from a large-scale battle. When the dust settled, a player inquired after two key NPCs—a brother and sister—had made it. Rather than deciding myself, I let the dice decide. I told the player to roll a d20. The possible results were: on a 1-4, both died; a middling roll, a single one succumbed; on a 10+, they made it.

Fate decreed a 4. This resulted in a profoundly poignant sequence where the party discovered the corpses of their allies, still clasped together in death. The cleric held a ceremony, which was especially significant due to earlier story developments. As a final gesture, I decided that the forms were strangely transformed, containing a enchanted item. By chance, the bead's magical effect was perfectly what the group lacked to address another major situation. One just script this type of serendipitous moments.

Honing DM Agility

This incident made me wonder if improvisation and spontaneity are actually the beating heart of tabletop RPGs. Even if you are a prep-heavy DM, your improvisation muscles need exercise. Adventurers reliably take delight in ignoring the most carefully laid plans. Therefore, a good DM must be able to pivot effectively and create scenarios in real-time.

Using on-the-spot randomization is a excellent way to practice these abilities without straying too much outside your preparation. The trick is to deploy them for small-scale decisions that won't drastically alter the session's primary direction. To illustrate, I wouldn't use it to establish if the king's advisor is a secret enemy. However, I would consider using it to decide whether the party reach a location moments before a key action takes place.

Enhancing Player Agency

This technique also helps maintain tension and foster the sensation that the game world is dynamic, shaping based on their decisions as they play. It combats the sense that they are merely pawns in a pre-written narrative, thereby bolstering the collaborative aspect of the game.

This philosophy has long been integral to the original design. Original D&D were enamored with random tables, which made sense for a playstyle focused on exploration. Although modern D&D often emphasizes 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 nothing wrong with thorough preparation. Yet, equally valid no problem with relinquishing control and letting the whim of chance to determine certain outcomes in place of you. Authority is a major part of a DM's job. We use it to manage the world, yet we frequently find it hard to release it, at times when doing so can lead to great moments.

The core recommendation is this: Have no fear of letting go of the reins. Try a little randomness for minor outcomes. It may create that the surprising result is far more powerful than anything you would have planned in advance.