diff --git a/src/server/game/Spells/SpellEffects.cpp b/src/server/game/Spells/SpellEffects.cpp
index a36a12dbfa4e3..450bcfd7757de 100644
--- a/src/server/game/Spells/SpellEffects.cpp
+++ b/src/server/game/Spells/SpellEffects.cpp
@@ -2286,7 +2286,7 @@ void Spell::EffectLearnSkill()
     if (!playerTarget)
         return;
 
-    if (damage < 0)
+    if (damage < 1)
         return;
 
     uint32 skillid = effectInfo->MiscValue;
@@ -2299,12 +2299,12 @@ void Spell::EffectLearnSkill()
         return;
 
     uint16 skillval = std::max<uint16>(1, playerTarget->GetPureSkillValue(skillid));
-    uint16 maxSkillVal = tier->GetValueForTierIndex(damage);
+    uint16 maxSkillVal = tier->GetValueForTierIndex(damage - 1);
 
     if (rcEntry->Flags & SKILL_FLAG_ALWAYS_MAX_VALUE)
         skillval = maxSkillVal;
 
-    playerTarget->SetSkill(skillid, (damage + 1), skillval, maxSkillVal);
+    playerTarget->SetSkill(skillid, damage, skillval, maxSkillVal);
 }
 
 void Spell::EffectPlayMovie()
@@ -4550,11 +4550,11 @@ void Spell::EffectSkill()
     if (!playerTarget)
         return;
 
-    if (damage < 0)
+    if (damage < 1)
         return;
 
     uint32 skillid = effectInfo->MiscValue;
-    if (playerTarget->GetSkillStep(skillid) >= (damage + 1))
+    if (playerTarget->GetSkillStep(skillid) >= damage)
         return;
 
     SkillRaceClassInfoEntry const* rcEntry = sDB2Manager.GetSkillRaceClassInfo(skillid, playerTarget->GetRace(), playerTarget->GetClass());
@@ -4566,12 +4566,12 @@ void Spell::EffectSkill()
         return;
 
     uint16 skillval = std::max<uint16>(1, playerTarget->GetPureSkillValue(skillid));
-    uint16 maxSkillVal = tier->GetValueForTierIndex(damage);
+    uint16 maxSkillVal = tier->GetValueForTierIndex(damage - 1);
 
     if (rcEntry->Flags & SKILL_FLAG_ALWAYS_MAX_VALUE)
         skillval = maxSkillVal;
 
-    playerTarget->SetSkill(skillid, (damage + 1), skillval, maxSkillVal);
+    playerTarget->SetSkill(skillid, damage, skillval, maxSkillVal);
 }
 
 void Spell::EffectSpiritHeal()
diff --git a/src/server/game/Spells/SpellInfo.cpp b/src/server/game/Spells/SpellInfo.cpp
index 45dba1d63e6ba..488e95d6a4808 100644
--- a/src/server/game/Spells/SpellInfo.cpp
+++ b/src/server/game/Spells/SpellInfo.cpp
@@ -429,6 +429,7 @@ SpellEffectInfo::SpellEffectInfo(SpellInfo const* spellInfo, SpellEffectEntry co
     TargetARadiusEntry = sSpellRadiusStore.LookupEntry(_effect.EffectRadiusIndex[0]);
     TargetBRadiusEntry = sSpellRadiusStore.LookupEntry(_effect.EffectRadiusIndex[1]);
     ChainTargets = _effect.EffectChainTargets;
+    DieSides = _effect.EffectDieSides;
     ItemType = _effect.EffectItemType;
     TriggerSpell = _effect.EffectTriggerSpell;
     SpellClassMask = _effect.EffectSpellClassMask;
@@ -513,6 +514,15 @@ int32 SpellEffectInfo::CalcValue(WorldObject const* caster /*= nullptr*/, int32
             *variance = valueVariance;
     }
 
+    // roll in a range <1;EffectDieSides> as of patch 3.3.3
+    if (DieSides)
+    {
+        if (DieSides == 1)
+            value += DieSides;
+        else
+            value += (DieSides >= 1) ? irand(1, DieSides) : irand(DieSides, 1);
+    }
+
     // base amount modification based on spell lvl vs caster lvl
     if (Scaling.Coefficient != 0.0f)
     {
diff --git a/src/server/game/Spells/SpellInfo.h b/src/server/game/Spells/SpellInfo.h
index 1c968c94bc308..1e62b6d34b373 100644
--- a/src/server/game/Spells/SpellInfo.h
+++ b/src/server/game/Spells/SpellInfo.h
@@ -233,6 +233,7 @@ class TC_GAME_API SpellEffectInfo
     SpellRadiusEntry const* TargetARadiusEntry;
     SpellRadiusEntry const* TargetBRadiusEntry;
     int32     ChainTargets;
+    int32     DieSides;
     uint32    ItemType;
     uint32    TriggerSpell;
     flag128   SpellClassMask;