Dota 2 Spell Amplification: Does It Affect Pudge Rot?
Yes. Spell amplification raises Rot’s damage to enemies and its pre-reduction self-damage. Pudge’s defenses then reduce the health he actually loses.
Reviewed against Valve’s current game data and patch history on August 13, 2026.
Does spell amplification increase Rot self-damage?
Yes—both sides of Rot scale before reductions
Rot deals magical spell damage to nearby enemies and a separate self-damage instance to Pudge. Pudge’s outgoing spell amplification increases both instances. The enemy’s defenses reduce the enemy damage; Pudge’s own magic resistance and other mitigation reduce the health he loses.
Valve’s current ability record describes Rot as harming enemies and Pudge, labels the damage as magical, and lists 30/60/90/120 damage per second. It does not mark Rot with a no-spell-amplification exception. Valve also explicitly states that Rot self-damage is non-lethal.
Rot with 10% spell amplification
| Rot level | Base DPS | With +10% spell amp |
|---|---|---|
| 1 | 30 | 33 |
| 2 | 60 | 66 |
| 3 | 90 | 99 |
| 4 | 120 | 132 |
This table shows the outgoing calculation: base damage × 1.10. It is not the final health loss after resistance, damage block, barriers, or other modifiers.
Current Kaya spell amplification
| Item | Cost | Spell amp |
|---|---|---|
| Kaya | 2,100 gold | +10% |
| Kaya and Sange | 4,200 gold | +12% |
| Yasha and Kaya | 4,200 gold | +12% |
Kaya also gives 16 Intelligence and mana-regeneration amplification. Valve’s current item note says multiple Kaya instances do not stack, so buying a second copy is not a second +10% source.
Does Intelligence still give spell amplification?
No—the old “16 Intelligence = 1% spell amp” rule is obsolete
Intelligence stopped being a source of spell amplification. Valve’s 7.33 notes say that Intelligence now grants 0.1% base magic resistance per point. Intelligence can still help through mana, mana regeneration, primary-attribute damage, or item-specific bonuses, but it does not automatically raise spell damage.
Bloodstone is not personal spell amplification
Current Bloodstone does not have the old charge-based personal spell-amp mechanic. It provides 20% spell lifesteal, and Bloodpact raises that spell lifesteal to 60% for five seconds. Its Spell Weakness Aura makes enemy units within 1,200 range take 10% more damage from spells.
- Outgoing spell amp: increases damage produced by the caster and can increase Rot’s enemy and self instances.
- Enemy spell vulnerability: increases spell damage received by affected enemies; Bloodstone’s aura does not turn into self-amplification on Pudge.
- Spell lifesteal: restores health from qualifying spell damage dealt to enemies; it is recovery, not damage amplification.
- Magic resistance: reduces incoming magical damage after the outgoing spell damage has been calculated.
Sources and limits
- Valve’s current Rot ability data provides the damage type, 30/60/90/120 DPS values, targets, and non-lethal self-damage note.
- Kaya, Kaya and Sange, and Yasha and Kaya provide the current prices and spell-amp values.
- Valve’s current Bloodstone data provides its spell lifesteal and 10% enemy Spell Weakness Aura values.
- Valve’s 7.33 notes document that Intelligence now grants base magic resistance rather than spell amplification.
Valve’s public Rot record does not spell out the full damage pipeline in prose. The Rot answer above follows the current client’s standard outgoing spell-damage rule: Rot is magical spell damage from Pudge, affects enemies and self through separate instances, and has no listed no-spell-amplification exception. Patch-specific modifiers can still change the final number shown in a match.