Context - the party are dungeon-delving into a rather mischievous vampire’s underground ‘lair’. They spot a door at the bottom of a pit.
DM: There’s a ladder you can climb down.
Rogue: Okay, I’ll go down and check for traps *succeeds*
DM: The ladder’s fine…
Rogue: I reach the bottom and yell up –.
DM: … but as your feet hit the floor, you trigger the trap hidden on the ground. Fireballs explode from all around you and those on the ladder.
*4d6 fire damage*
DM: Roll to keep hold of the ladder.
*NPC companion nat 1s*
DM: Anton falls and …
Rogue: FEATHER FALL!
DM: … lands gently on the floor…….. triggering the trap again.
*3d6 fire damage*
DM: Again, roll to keep hold.
*Ranger-druid fails and hits the ground*
*2d6 fire damage*
DM, gleefully: And again?
*Cleric fails and falls*
*1d6 fire damage*
DM, is far too happy: Once more?
*everyone succeeds and makes it down the ladder, but only because the trap is exhausted*
Party: *is totally wrecked and on its last legs purely because of fire and fall damage*
Rogue: *took absolutely no damage because of evasion* Well that wasn’t too bad. Let’s look at this door…
DM: The door is painted on the wall. You’re literally in a dead end pit.