io rune

An Io rune is a low tier rune that can be socketed into armor and weapons in Diablo 2: Lord of Destruction and Diablo 2 Resurrected. An Io rune provides +10 to Vitality when inserted in any item.

You can cube 3 Hel runes and a chipped diamond together to get an Io rune. You can also obtain an Io rune from nightmare countess. You can get an Io rune from the nightmare hellforge quest.

An Io rune requires level 35 to use. When you socket an item with an Io rune, you increase the level requirement to level 35, unless it was already higher.

Clvl 35
weapon+10 to Vitalityarmor/helm+10 to Vitalityshield+10 to Vitality
rune sources

Countess:

Nightmare and above

Hellforge:

Nightmare

Treasure class:

Act 1 (N) Good

Cube:

3 Hel Rune + Chipped Diamond

Horadric cube recipes with io runes

upgrade rune

Io Rune
Io Rune
Io Rune
flawed topaz
horadric cube interface

Drop Chance

An Io rune will drop from TC Runes 8, which is accessed through Runes 9, Act 1 (N) Good or Countess Rune (N). Learn more about Treasure Classes here.

Act 1 (N) Good

Jewelry C
Chipped Gem
Flawed Gem
Normal Gem
Flawless Gem
Runes 8

Runes 8

Hel Rune
Io Rune
Runes 7

There are 8 runewords that contain an io rune

list of all runewords in Diablo 2 made with an io rune
Runeword
Sockets
Allowed BasesRuneword Recipe
Level
Stats
Black3 socketsclubhammermace
thul runethul + io runeio + nef runenef
35
+15% Increased Attack Speed+120% Enhanced Damage+200 to Attack RatingAdds 3-14 Cold Damage (thul)40% Chance of Crushing BlowKnockback (nef)+10 to Vitality (io)Magic Damage Reduced By 2Level 4 Corpse Explosion (12 Charges)
White2 socketswand
dol runedol + io runeio
35
+3 to Poison and Bone Skills (Necromancer Only)+20% Faster Cast Rate+2 to Bone Spear (Necromancer Only)+4 to Skeleton Mastery (Necromancer Only)+3 to Bone Armor (Necromancer Only)Hit causes monster to flee 25% (dol)+10 to vitality (io)+13 to manaMagic Damage Reduced by 4
Memory4 socketsstaff
lum runelum + io runeio + sol runesol + eth runeeth
37
+3 To Sorceress Skill Levels+33% Faster Cast Rate+9 To Minimum Damage (sol)-25% Target Defense (eth)+3 To Energy Shield (Sorceress Only)+2 To Static Field (Sorceress Only)+50% Enhanced Defense+10 to Vitality (io)+10 to Energy (lum)Increase Maximum Mana 20%Magic Damage Reduced By 7
Unbending Will6 socketssword
fal runefal + io runeio + ith runeith + eld runeeld + el runeel + hel runehel
41
18% Chance To Cast Level 18 Taunt On Striking+3 to Combat Skills (Barbarian Only)+20-30% Increased Attack Speed (varies)+300-350% Enhanced Damage+9 to Maximum Damage (ith)+50 to Attack Rating (el)+75 Damage to Undead+50 to Attack Rating Against Undead (eld)8-10% Life Stolen Per Hit (varies)Prevent Monster Heal+10 to Strength (fal)+10 to Vitality (io)Damage Reduced By 8+1 to Light Radius (el)Requirements -20% (hel)
Delirium3 socketshelm
lem runelem + ist runeist + io runeio
51
1% Chance To Cast level 50 Delirium When Struck6% Chance To Cast level 14 Mind Blast When Struck14% Chance To Cast level 13 Terror When Struck11% Chance To Cast level 18 Confuse On Striking+2 To All Skills+261 Defense+10 To Vitality (io)50% Extra Gold From Monsters (lem)25% Better Chance of Getting Magic Items (ist)Level 17 Attract (60 Charges)
Dream3 socketshelmshield
io runeio + jah runejah + pul runepul
65
10% Chance To Cast Level 15 Confuse When StruckLevel 15 Holy Shock Aura When Equipped+20-30% Faster Hit Recovery (varies)+30% Enhanced Defense (pul)+150-220 Defense (varies)+10 To Vitality (io)+(0.625*Clvl) To Mana (Based On Character Level)All Resistances +5-20 (varies)12-25% Better Chance of Getting Magic Items (varies)HeadgearIncrease Maximum Life 5% (jah)Shields+50 To Life (jah)
Pride4 socketspolearmspear
cham runecham + sur runesur + io runeio + lo runelo
67
25% Chance To Cast Level 17 Fire Wall When StruckLevel 16-20 Concentration Aura When Equipped (varies)260-300% Bonus To Attack Rating (varies)+(1*Clvl)% Damage To Demons (Based on Character Level)Adds 50-280 Lightning Damage20% Deadly Strike (lo)Hit Blinds Target (sur)Freezes Target +3 (cham)+10 To Vitality (io)Replenish Life +8(1.875*Clvl)% Extra Gold From Monsters (Based on Character Level)
Obsession6 socketsstaff
zod runezod + ist runeist + lem runelem + lum runelum + io runeio + nef runenef
69
Indestructible (zod)24% Chance to cast level 10 Weaken when struck+4 To All Skills+65% Faster Cast Rate+60% Faster Hit RecoveryKnockback (nef)+10 To Vitality (io)+10 To Energy (lum)Increase Maximum Life 15-25% (varies)Regenerate Mana 15-30% (varies)All Resistances +60-70 (varies)75% Extra Gold from Monsters (lem)30% Better Chance of Getting Magic Items (ist)

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