A Flumph Interrupted

The following one-shot campaign was created after the party inadvertently fell into a portal, as this presented an opportunity for a guest DM to run a quick and distinct session. My intention for the adventure was to target specific party weaknesses, specifically: Casters spending all their spell slots too quickly Tanks always rushing in Bear barbarian not being resistant to psychic damage As such, the adventure is designed to troll melee attackers and tempt casters to waste their slots on low-level creatures before facing the final battles.