This module adds the ability for GMs to add "Diminishing Pools", dice pools that shrink in size depending on the results.
Pools can be created using the /addpool or /newpool chat commands.
The amount and type of dice in a pool are configurable, as well as the "threshold" each die needs to roll above to not get dropped from the pool.
Pools can also be marked as hidden, in which case they will not be visible to non-GM users.

Currently configured pools can be seen in the tracker application accessible through the /pools chat command.

This module is primarily inspired by the "Diminishing Pools" mechanic from Grimwild.
Go and give the game a try, there's even a free edition!