I am DMing a level 20 "3-shot" set in the present day. I am trying to run the sessions as RAW as possible. After our first session, a player whose character can cast True Polymorph wanted to polymorph a Commoner NPC into a stronger creature so they could enlist them to their cause. The True Polym...

The party have just set off a Wail of the Banshee Trap. Can a Bard's Countersong be used to mitigate the effects. The bardic music had not been started before setting off the Trap. My feeling is it does work.

I'm working on a dice-heavy RPG, and trying to model a generic AnyDice function to calculate the probability of rolling a specific desired result for dice faces, such as "At least 3 dice with either 5's or 6's on them", with Y d6 and Z rerolls, rerolling any dice that do not match one of the desi...