ROOM CONTENT (TREASURE) (d6) QUICK TRAPS (d12) *Poison HAZARD (d6)
1 Empty/Boring (None) 1 Jaw/Snare 7 Contain/Separate 1 Water
2 Dress/Debris (1:6 Hidden, Minor/Clue) 2 Pit/Chute 8 Glyph/Symbol 2 Unstable
3-4 Monster, Wander/Misc (1:6 Carried) 3 Crush 9 Blade/Saw 3 Block/Bar
5 Monster, Lair (Hoarded, per DM) 4 Monster 10 Spear/Arrow 4 Gas/Vapor
6 Special/Trap/Hazard (1:6 each) +Reroll 5 Fire/Oil 11 Needle/Dart* 5 Chasm/Pit
(6 = with Treasure) 6 Ray/Bolt 12 Gas*/Acid 6 Magic
As an action, you can spread a bag of CALTROPS to cover a square area that is 5 feet on a side. Any creature that enters the area must succeed on a DC 15 Dexterity saving throw or stop moving this turn and take 1 piercing damage. Taking this damage reduces the creature's walking speed by 10 feet until the creature regains at least 1 hit point. A creature moving through the area at half speed doesn't need to make the save."
(House: Damage reduces MV by half)