Monster Mash – Rust Monster Swarm

Recently, bawylie started an awesome thread over on the D&D forums called “Monster Mash”.

It is a Dungeon Master creativity exercise where you choose a creature, a circumstance, and a setting, then create a scenario (summary) and have an open-ended question pertaining to the scenario. The goal is to create adventure ideas and this fun exercise lets you come up with some great stuff quickly.

The one rule used when multiple people are participating is that the last letter of the creature has to be the first letter of the circumstance, and the last letter of the circumstance has to be the first letter of the setting. Once that is done, the next individual to take a turn has to use the last letter of the previous individual’s setting as the first letter of the creature they chose.

Here is the first of my entries on the thread…

Rust Monster Swarm, Magic Gone Wrong, Gedren’s Point

Thanks to a Wizard’s botched magical experiment on a Rust Monster, there is now a large swarm of Rust Monster clones (plus the original) swarming through the local countryside in a ravenous feeding frenzy. (Somewhere between 25 – 40 of them.)

Each time one of the Rust Monster clones is killed, a new one ‘spawns’ to take its place! The characters have two options to defeat the swarm:

1.) Undo the Wizard’s botched magical experiment.


2.) Manage to find the original Rust Monster among the swarm running all over the place and destroy it, thus ending the swarm’s ability to spawn new/replacement Rust Monsters.

Rust Monster

Bonus Adventure

Another D&D forum member (iserith) liked the idea so much that he created an awesome adventure based on the idea. It is called The Corrosion of Gedren’s Point, so make sure to check it out!

The Corrosion Of Gedren's Point


About Akeisha Leighanne Roberts

I am a role player who loves the classic BECMI, AD&D 1st Edition, D&D 3rd Edition, and D&D 5th Edition rule sets. I am also quite fond of Pathfinder and Star Frontiers. My Moonhaven Forest blog is a place for me to share my ideas, thoughts, and maps for these lovely games. You can visit me on Twitter as well. :)
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