Can someone explain?
Another word for the season of Autumn is Fall.
Thus, the DM is about to make a pun about Fall damage. The player of the bard notices the incoming pun, takes defensive action via casting a counter-pun spell, and thus prevents a table full of groaning and moaning, and possibly even laughter.
Laughter from a pun like this is a rare thing, a charisma check of 19 with disadvantage.
More like charisma save, DC 0
We’re D&D players, we all have a -1 at most
They entered into fall, so the bard prevented fall damage by using feather fall.
Technically they also prevented mental damage to the players from the pun
Fall damage
Leaves fall, everyone dies
Sadly there are many such cases.
and brother, i hurt people
DM: Instead of leaves, the forest is covered in what appears to be goose down.
Fizban? Was he here?
Are we about to roll initiative against grass??
