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Ioun Stones

[varies] magical


  • Price: dependent
  • Bulk: –
  • Hands:
  • Slot: –

These crystalline stones always float in the air within three feet of their owner while active. When a person first acquires a stone, they must hold it and then release it with a single action command, whereupon it takes up a circling orbit 1d3 feet from their head. Thereafter, a stone must be grasped or netted to separate it from its owner with a DC 40 check. The owner may voluntarily seize and stow a stone without a check, but they lose the benefits of the stone during that time.

Ioun stones have AC 30, Hardness 10, and Toughness 6. The powers of each stone vary depending on its color and shape. You can have up to three stones active at a time. Each floats a different distance from the user’s head. The tag for an ioun stone depends on its effect or spell at the GM’s discretion.

If an intact ioun stone ever gains the Broken condition, it is treated as cracked. If a cracked or flawed ioun stone gains the Broken condition it becomes a Dull Grey stone. A cracked or flawed ioun stone cannot be repaired. Unless otherwise listed, an ioun stone is a common item.

ColorEffectCrackedFlawedPriceRarity
AgateOne time use of the Augury spell treated as an automatic success on the Flat DC checkOne time use of the Augury spell taking advantage on the Flat checkOne time use of a normal Augury spell800 silversUncommon
AmberGrants a 1d6 Item bonus to savesReduced to a 1d4 Item bonus500 silversUncommon
ClearYou can go without food or waterYou can go without half the food or water you normally need300 silversUncommon
CrimsonGrants a +2 Item bonus to Intelligence ScoreReduced to a +1 Item bonus1,000 silversUncommon
Dark BlueGrants a 1d8 Item bonus to Insight and Perception checksReduced to a 1d4 Item bonus1,200 silversUncommon
Dark BrownConstant awareness of how many feet you are above or below sea level60 silversUncommon
Dark GreenConstant use of Detect Poison with a Level 3 Spell SlotConstant use of Detect PoisonUse of Detect Poison three times per 24 hours1,200 silversUncommon
Dark RedGrants a +2 Item bonus to Dexterity ScoreReduced to a +1 Item bonus1,000 silversUncommon
Dull GrayNo abilities but is an attended object while activeNo abilities but is an attended object while active2 coppersCommon
Dusty RoseGrants a +1 Item bonus to ACGrants a +1 Item bonus to Initiative checks 800 silversUncommon
Eastern StarConstant use of Comprehend Languages with a Level 4 Spell SlotConstant use of Comprehend LanguagesUse of Comprehend Languages three times per 24 hours1,100 silversUncommon
EmeraldGrants 24 temporary hit points once per 24 hours at a predesignated timeReduced to 12 temporary hit pointsReduced to 6 temporary hit point120 silversUncommon
GambogeGrants Immunity against poisonsGrants advantage against poisonsGrants a 1d4 Item bonus against poisons600 silversUncommon
GoldConstant use of TonguesUse of Tongues three times per 24 hours4,000 silversRare
Incandescent BlueGrants a +2 Item bonus to Wisdom ScoreReduced to a +1 Item bonus1,000 silversUncommon
IridescentYou can go without airYou can go twice as long without air as you normally could 1,800 silversUncommon
LavenderAs a reaction, this absorbs a spell cast with a Level 8 Spell Slot or lower up to a total of 50 spell levelsReduced to Level 4 Spell Slots or lower up to a total of 30 spell levelsReduced to Level 1 Spell Slots up to a total of 10 spell levels9,000 silversVery Rare
MagentaGrants a +2 Item bonus to an Ability Score and can reassign the Ability Score once per 24 hours at a predesignated time5,500 silversVery Rare
MossyGrants a 1d8 Item bonus to one of the following: Arcana, Dungeoneering, History, Lore, Medicine, Nature, Religion, or SocietyReduced to a 1d4 Item bonusReduced to a 1d4 Item bonus and inflicts disadvantage to Acrobatics1,400 silversUncommon
MulberryGrants a 1d8 Item bonus to Deception and DiplomacyReduced to a 1d4 Item bonusReduced to a 1d4 Item bonus and inflicts disadvantage to Insight1,500 silversUncommon
Nacreous GrayGrants the benefits of Timeless BodyProtects against some aging effects, determined randomlyPrevents the user from looking older2,300 silversRare
OnyxGrants a +2 Item bonus to Constitution ScoreReduced to a +1 Item bonus1,000 silversUncommon
Opalescent WhiteGrants Proficiency with one Weapon GroupGrants a 1d4 Item bonus to attacks with a Weapon GroupGrants a +1 Item bonus to attacks with a Weapon Group300 silversUncommon
OrangeGain one Spell Slot and one Known Spell one level higher than the user currently has access to (capped at Level 5), this is a Level 1 Spell if the user does not have the Spellcasting traitGain an extra Spell Slot of a known Spell Level (capped at Level 5)700 silversUncommon
Pale BlueGrants a +2 Item bonus to Strength ScoreReduced to a +1 Item bonus 1,000 silversUncommon
Pale GreenGrants a 1d4 Item bonus to saves and skillsApplies only to savesApplies only to one skill3,800 silversRare
Pale LavenderAs a reaction, this absorbs a spell cast with a Level 4 Spell Slot or lower up to a total of 20 spell levelsReduced to Level 1 Spell Slots or lower up to a total of 10 spell levelsReduced to Level 1 Spell Slots up to a total of 3 spell levels3,000 silversRare
Pale OrangeOnce per 24 hours, can catch the user’s soul if they gain the Dead condition and allows user to return to their body within 4 hours, determined randomly, with the Dying 1 and Unconscious conditionsReduced to one time useCan be used as the material requirements for spells to return the user to life2,500 silversRare
Pale RubyGrants a 1d8 Item bonus to StealthReduced to a 1d4 Item bonusReduced to a 1d4 Item bonus and inflicts disadvantage to Thievery1,100 silversUncommon
Pearly WhiteUse of Regenerate three times per 24 hours for a minute durationUse of Regenerate once per 24 hours for a minute durationUse of Regenerate once per 24 hours for a round4,900 silversRare
PinkGrants a +2 Item bonus to Charisma ScoreReduced to a +1 Item bonus1,000 silversUncommon
ScarletGrants a 1d6 Item bonus to all d20 rolls when the user has the Fatigued conditionReduced to a 1d4 Item bonusReduced to a +1 Item bonus5,500 silversVery Rare
SilverUse of a Level 1 Spell three times per 24 hours as a supernatural ability (replace the magical tag with the supernatural tag)Use of a Level 1 Spell once per 24 hours as a supernatural ability (replace the magical tag with the supernatural tag)Use of a Level 1 Spell once per 24 hours150 silversUncommon
ThornyGrants a 1d8 Item bonus to Combat ManeuversReduced to a 1d4 Item bonusReduced to a 1d4 Item bonus and inflicts disadvantage to Acrobatics1,000 silversUncommon
TourmalineUser gains the Dead condition only at Dying 54,000 silversRare
TurquoiseGrants a 1d8 Item bonus to NatureReduced to a 1d4 Item bonusReduced to a 1d4 Item bonus and inflicts disadvantage to Survival900 silvers  Uncommon
VermilionGrants a 1d8 Item bonus to AcrobaticsReduced to a 1d4 Item bonusReduced to a 1d4 Item bonus and inflicts disadvantage to Stealth1,200 silvers  Uncommon
Vibrant PurpleUser can store up to five spells to cast in the future (this can be recharged)User can store up to two spells to cast in the future (this can be recharged)2,300 silversRare
Western StarConstant use of Illusory Disguise at a Level 4 Spell SlotConstant use of Illusory DisguiseUse of Illusory Disguise three times per 24 hours800 silversUncommon

Some ioun stones have extra rules:

  • Agate, Cracked Pale Orange, and other ioun stones with a one-time use become a Dull Grey ioun stone after being used.
  • Lavender, Pale Lavender, and those stones that absorb spells require their users to expend a reaction to absorb a spell. Absorbed spells can then be used to power the user’s own spells. The user can expend a number of absorbed spell levels equal to or greater than the level of their spell being cast. This reduces the number of usable spell levels that were absorbed. However, it does not reduce the number of levels the stone absorbed for the purpose of reaching it maximum number of spell levels it can absorb. Once the maximum number of spell levels a stone can absorb is reached, that stone becomes Dull Gray ioun stone.
  • Orange stones users can change the Spell Slot and Spell Known each time they gain access to a new Spell Level.
  • Pearly White stones only cure damage with Regeneration that the user took while the stone was active, not prior to its activation.
  • Vibrant Purple stones store spells cast only by a creature with the Spellcasting trait, but the stored spells can then be used by anyone at any time in the future. Those who cast the stored spell, can regain their expended Spell Slots after resting without the ioun stone losing the stored spell.
  • Those with Item bonuses stack with each other, unless otherwise stated. All active ioun stones count as a single Item bonus for the purpose of determining the limit of Item bonuses.

Crafting Requirements: You must be able to craft runes. When crafting an ioun stone, if you fail the check, rather than failing completely to make it, it is cracked or flawed. Roll 1d100. On a 01-60, the stone is flawed and on a 61-100 the stone is cracked. A cracked stone is worth half as much as an intact stone and a flawed stone is worth a quarter as much. This sometimes drops the rarity of the stone too.