diff --git a/src/game/SpellEffects.cpp b/src/game/SpellEffects.cpp
index 8c1f08748..9d1e2eb1d 100644
--- a/src/game/SpellEffects.cpp
+++ b/src/game/SpellEffects.cpp
@@ -1542,6 +1542,33 @@ void Spell::EffectDummy(SpellEffectIndex eff_idx)
                     m_caster->CastSpell(m_caster, 54586, true);
                     return;
                 }
+                case 53808:                                 // Pygmy Oil
+                {
+                    const SpellEntry *pSpellShrink = sSpellStore.LookupEntry(53805);
+                    const SpellEntry *pSpellTransf = sSpellStore.LookupEntry(53806);
+
+                    if (!pSpellTransf || !pSpellShrink)
+                        return;
+
+                    if (Aura* pAura = m_caster->GetAura(pSpellShrink->Id, EFFECT_INDEX_0))
+                    {
+                        uint8 stackNum = pAura->GetStackAmount();
+
+                        // chance to become pygmified (5, 10, 15 etc)
+                        if (roll_chance_i(stackNum*5))
+                        {
+                            m_caster->RemoveAurasDueToSpell(pSpellShrink->Id);
+                            m_caster->CastSpell(m_caster, pSpellTransf, true);
+                            return;
+                        }
+                    }
+
+                    if (m_caster->HasAura(pSpellTransf->Id, EFFECT_INDEX_0))
+                        return;
+
+                    m_caster->CastSpell(m_caster, pSpellShrink, true);
+                    return;
+                }
                 case 55004:                                 // Nitro Boosts
                 {
                     if (!m_CastItem)
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 80d27f4e7..06b5c2fe3 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "9816"
+ #define REVISION_NR "9817"
 #endif // __REVISION_NR_H__