Room Upgrades

After or during building an expansion, you can purchase these following upgrades. If you purchase one of these upgrades while an expansion is being built, it adds the appropriate build time to the expansion. If purchased after, the expansion does not receive the upgrade benefits until after the time is finished. All requirements listed must be filled to complete the expansion.

Extra-Dimensional

Requirements: A character or hireling that can cast 8th level spells

Cost: 10000gp

Time: 30 DT

Benefit: This room's door is actually a portal to a pocket dimension, containing the room itself. The laws of time and gravity in the expansion are yours to set, within limit, and only once you first modify the expansion. Gravity can be half to twice as strong, and time can move at half-pace to double time, relative to the outside. The expansion also has immunity to scrying, tracking, or other location tracking that cannot reach interdimensionally.

Hidden

Requirements: null

Cost: 5000gp

Time: 15 DT

Benefit: This modification may be added onto any expansion to hide it from view. The owner and any ally they specify know the secret to entry, and all others must make a series of checks. First they need a DC 15 Intelligence (Investigation) check to know the existence of such an addition, then a DC 15 Wisdom (Insight) check to figure out how to enter.

Trapped

Requirements: Varies

Cost: Varies

Time: 7 days

Benefit: This room contains one of the following traps, which you choose when you build this modification (DMG 122-123). This may be built multiple times in the same room.

  • Falling Net: 1500gp, requires someone proficient in Wisdom (Survival)
  • Fire-Breathing Statue: 2500gp, requires someone who can cast second level spells
  • Pit, simple: 1000gp
  • Pit, hidden: 2000gp, requires a character or hireling proficient in Dexterity (Stealth) or Charisma (Deception)
  • Pit, locking: 3000gp, requires a character or hireling proficient in Dexterity (Stealth) or Charisma (Deception) or Dexterity (Sleight of Hand)
  • Pit, spiked: 4000gp, requires someone proficient in Wisdom (Survival), if locking or hidden also requires a character or hireling proficient in Dexterity (Stealth) or Charisma (Deception) or Dexterity (Sleight of Hand)
  • Poison Darts: 2500gp, requires someone proficient in Wisdom (Survival)
  • Poison Needle: 3000gp, requires someone proficient in Wisdom (Survival)
  • Rolling Sphere: 4000gp, requires someone proficient in Wisdom (Survival)
  • Sphere of Annihilation: 5000gp, requires someone who can cast 7th level spells

Warded or Spell-Bound

Requirements: Someone who can cast the listed spell

Cost: Varies

Time: 7 days

Benefit: This expansion is under the effect of one spell that you choose from the following list when building this upgrade. You can only alter it by rebuilding this modification. The spells fill the entire room and are cast at the lowest level possible. The owner and their allies are considered to be the casters of the spell. Saves against this spell are made against a DC 15. This structure may be built several times, with a different spell for each.

  • Alarm: 1500gp
  • Animate Objects: 3000gp. Objects equal to one casting of this spell automatically attack enemies of the owners after one minute of inactivity. Once per round, they follow the instructions of their owners who spend a bonus action to issue commands
  • Antimagic Field: 4500gp
  • Circle of Power: 3000gp
  • Magic Circle: 3000gp
  • Reverse Gravity: 4000gp
  • Unseen Servant: 500gp per unseen servant up to 10, all who respond to the wishes of their owner and their allies
  • Zone of Truth: 1500gp. When building this modification, choose if the affected creatures are any creature, the owner and their allies, or the enemies of the owner.