League Classic matchup
Dr. Mundo vs Olaf
The lane, from both sides
Dr. Mundo’s side
- Weak against Olaffrom the Top Regen Tank build (Top)
Reckless SwingReckless SwingEActive: Olaf strikes thunder onto the target enemy, dealing true damage.'s true damage goes straight through the health and regeneration Mundo stacks, and 
RagnarokRagnarokRActive: Olaf becomes enraged for 6 seconds, cleansing himself of all crowd control and becoming immune to them, as well as gaining bonus armor, bonus magic resistance, and lethality. means he cannot even be peeled off.
Olaf’s side
- Strong against Dr. Mundofrom the Jungle AD Bruiser build (Jungle)
SadismSadismRActive: Dr. Mundo regenerates health over 12 seconds and gains bonus movement speed for the duration. restores a percentage; Reckless SwingReckless SwingEActive: Olaf strikes thunder onto the target enemy, dealing true damage. removes a flat lump of true damage on a short cooldown. 
Infected CleaverInfected CleaverQActive: Dr. Mundo hurls a cleaver in the target direction, dealing magic damage to the first enemy it hits and slowing them by 40% for 2 seconds. Infected Cleaver has a minimum damage threshold. If Infected Cleaver hits an enemy, Dr. Mundo heals for 50% of the health cost.'s slow does nothing through RagnarokRagnarokRActive: Olaf becomes enraged for 6 seconds, cleansing himself of all crowd control and becoming immune to them, as well as gaining bonus armor, bonus magic resistance, and lethality..
The lane in detail
Dr. MundoOlafOlaf-favored while repeated swings connect
Burning Agony's radius and Reckless Swing's range are the same 325.
Reckless SwingReckless SwingEActive: Olaf strikes thunder onto the target enemy, dealing true damage. bypasses Mundo's resistances, but extra health still helps him survive it. RagnarokRagnarokRActive: Olaf becomes enraged for 6 seconds, cleansing himself of all crowd control and becoming immune to them, as well as gaining bonus armor, bonus magic resistance, and lethality. removes his cleaver slow for 6 seconds, making distance harder to maintain.
Who has the lane, level by level
4–89–18- 1–3Even: Cleavers and swings begin the trade
- 4–8Olaf: Reckless Swing gains damage and loses cooldown
- 9–18Olaf: The final swing rank returns every five seconds
- 1MasochismLevel 1: 5 seconds of 40 attack damage, on a 7 second cooldown
- 1Reckless SwingLevel 1: 100 true damage at 325 units; the zero mana cost does not mean a free cast
- 6SadismLevel 6: The re-engage button, at 15% movement speed for 12 seconds
- 6RagnarokLevel 6: 6 seconds of immunity, 30 bonus resistances, 10 lethality
- 9Reckless SwingLevel 9: The fifth rank deals 340 true damage on a 5-second cooldown
- 13Infected CleaverLevel 13: The fifth point at last, and a hit now returns 45 health
The numbers, head to head
Dr. MundoOlafRank 5 main, per cast
One shrinks as Olaf drops. The other reads 340 at any health bar.
Thrown reach, units
Walking over the axe takes 4.5 seconds off an 8 second cooldown.
Crowd control on the ledger
RagnarokRagnarokRActive: Olaf becomes enraged for 6 seconds, cleansing himself of all crowd control and becoming immune to them, as well as gaining bonus armor, bonus magic resistance, and lethality.'s 6 seconds outlast the 2 the slow runs, and it cleanses that besides.
Sustain at rank 1
SadismSadismRActive: Dr. Mundo regenerates health over 12 seconds and gains bonus movement speed for the duration. is one press every 75 seconds; 
Vicious StrikesVicious StrikesWActive: For 6 seconds, Olaf gains bonus attack damage, life steal, and spell vamp. is back in 12.
Where the swing happens, units
325Olaf can cast from outside basic-attack reach, but 325 also enters the 
Burning AgonyBurning AgonyWDr. Mundo drains his health to reduce the duration of disables and deal continual damage to nearby enemies. radius.
Missing health, rank 5 against the passive
That half caps at 100 attack damage for Mundo and 100% attack speed for Olaf.
Reach, from above
Dr. Mundo
Olaf
Rings are ranges in game units, both radars on one scale. Abilities wear their icon, the basic attack wears the champion’s own face; the dashed ring wearing the opponent’s face is their longest reach.
The item race
Dr. Mundo
1000gThe extra 380 health absorbs part of a flat true-damage hit that armor cannot reduce.
3000gMore health helps Mundo survive repeated swings and increases the amount restored by Sadism and Adrenaline Rush.
1000gArmor reduces Undertow and attacks; the basic-attack block offers no protection from Reckless Swing.
2750gLifeforce adds 20% to Sadism and the passive, and the 20% cooldown reduction costs no mana.
3125gBerserker Rage makes Olaf faster as he drops, and Cold Steel takes 15% of that back on every hit.
Olaf
- 1000g
The physical half of Mundo is his attacks, and Masochism can add 200 attack damage to them at rank 5.
1900gHealth regeneration repairs cleaver poke between trades; Cleave adds damage when Mundo stays in melee.
3300gLife steal that also pays out on the cleave, on top of 75 attack damage.
- 2750g
The cleaver and Burning Agony are both magic, and Lifeforce puts another fifth on Vicious Strikes.
Play it as Dr. Mundo
- 1Poke with Infected CleaverInfected CleaverQActive: Dr. Mundo hurls a cleaver in the target direction, dealing magic damage to the first enemy it hits and slowing them by 40% for 2 seconds. Infected Cleaver has a minimum damage threshold. If Infected Cleaver hits an enemy, Dr. Mundo heals for 50% of the health cost. while staying beyond Reckless SwingReckless SwingEActive: Olaf strikes thunder onto the target enemy, dealing true damage. range; retreat sideways from
UndertowUndertowQActive: Olaf throws an axe to the target location that deals physical damage to enemies it passes through and slows them decaying over 2.5 seconds. The axe remains in place for a duration equal to Undertow's cooldown, granting sight of its surroundings for 0.5 seconds. Olaf can pick up the axe to reduce Undertow's cooldown by 4.5 seconds. so Olaf cannot close. - 2Read his health bar as well as yours.
Berserker RageBerserker RagePassiveInnate: Olaf gains 1% bonus attack speed for every 1% of health he is missing, up to 100%. pays him 1% attack speed per 1% missing. - 3Back away when RagnarokRagnarokRActive: Olaf becomes enraged for 6 seconds, cleansing himself of all crowd control and becoming immune to them, as well as gaining bonus armor, bonus magic resistance, and lethality. starts and reapply the cleaver slow after its six seconds of immunity end.
Play it as Olaf
- 1Use Reckless SwingReckless SwingEActive: Olaf strikes thunder onto the target enemy, dealing true damage. when you can afford the health trade. No mana cost is not a reason to cast recklessly at low health.
- 2Activate Vicious StrikesVicious StrikesWActive: For 6 seconds, Olaf gains bonus attack damage, life steal, and spell vamp. as you enter basic-attack range so its life steal can restore health throughout the exchange.
- 3Finish Spirit Visage before Randuin's Omen: Lifeforce adds a fifth to a rank 5 Vicious StrikesVicious StrikesWActive: For 6 seconds, Olaf gains bonus attack damage, life steal, and spell vamp. at 21%.
The catch
Mundo recovers through 
Adrenaline RushAdrenaline RushPassiveDr. Mundo regenerates 0.3% of his maximum Health each second. and SadismSadismRActive: Dr. Mundo regenerates health over 12 seconds and gains bonus movement speed for the duration.; Olaf relies on attacks and spells during Vicious StrikesVicious StrikesWActive: For 6 seconds, Olaf gains bonus attack damage, life steal, and spell vamp.. Reckless SwingReckless SwingEActive: Olaf strikes thunder onto the target enemy, dealing true damage. spends no mana, but its archived description charges health. That cost matters when both champions are low. More maximum health helps Mundo absorb flat true damage, although RagnarokRagnarokRActive: Olaf becomes enraged for 6 seconds, cleansing himself of all crowd control and becoming immune to them, as well as gaining bonus armor, bonus magic resistance, and lethality. still removes his only slow.
The kits at a glance
Dr. Mundo
Full abilities- Adrenaline Rush
- Infected Cleaver
- Burning Agony
- Masochism
- Sadism
Olaf
Full abilities- Berserker Rage
- Undertow
- Vicious Strikes
- Reckless Swing
- Ragnarok
Base stats, side by side
| Stat | Dr. Mundo | Olaf |
|---|---|---|
| Health | 560 (+90) | 534 (+93) |
| HP regen | 1.45 (+0.15) | 1.58 (+0.18) |
| Mana | – | 270 (+45) |
| Attack damage | 59.23 (+3) | 57.6 (+3.5) |
| Armor | 24.5 (+3.5) | 24 (+3) |
| Magic resist | 31.25 (+1.25) | 31.25 (+1.25) |
| Attack speed | 0.658 (+2.8) | 0.694 (+2.7) |
| Move speed | 345 | 350 |
| Attack range | 125 | 125 |
Level-1 values with per-level growth in parentheses, read from the Classic client and re-checked against it on every update.
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NasusThe full kits, builds and every other matchup: Dr. Mundo · Olaf