Yama Tsukami (Green) Weaknesses, Patterns, and How to Beat
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This is a guide to the Yama Tsukami (Green) Elder Dragon Boss Fight found in Tarkuan in Monster Hunter Stories 3 (MHS3). Learn how to beat Yama Tsukami (Green), its weaknesses, behaviour and attack pattern, and the best strategy to beat Yama Tsukami (Green).
| Yama Tsukami Guides | |
|---|---|
 Main Story Boss |
 Elder Dragon Boss |
List of Contents
Yama Tsukami (Green) Boss Weaknesses and Resistances
Yama Tsukami (Green) Weakness
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Yama Tsukami (Green) Damage Type Weaknesses
| Body Part |  Slash |
 Pierce |
 Blunt |
|---|---|---|---|
| Main Body | ◯ | ◯ | ◯ |
| Mouth | ◯ | ◯ | ◯ |
| Valve | ✕ | ✕ | ◯ |
| Right Tentacle | ◯ | ✕ | ✕ |
| Left Tentacle | ✕ | ◯ | ✕ |
Status Ailment Resistance and Weaknesses
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↓ | ↑↑ | ↑↑ | ↑↑ | ||||
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Yama Tsukami (Green) Pattern and Behaviour
| Health Threshold | |
|---|---|
| Above 50% | Below 50% |
Attack Behaviour Above 50% HP
| Normal State |  |
|---|---|
| Open Mouth |  |
| Exposed | |
Yama Tsukami (Green) have 3 phases which are its normal state, open mouth and exposed.
Normal State
| Turn Count | Move |
|---|---|
| Turn 1 | Tentacle Vortex (AoE Skill) |
| Turn 2 | Power Attack |
| Turn 3 | Left/Right Overhead Smash |
| Turn 4 | Power Attack |
| Turn 5 | Steam Surge (AoE Skill) |
| Turn 6 | Body Press |
| Turn 7 onwards Will transition to the Open Mouth state after breaking the two tentacle parts and using a Power Attack at the end of the next turn. |
Repeat moveset from Turns 1 to 6 exchanging the Overhead Smash skills to the unbroken part instead |
This is the state Yama Tsukami (Green) starts with. It will always start with a skippable AoE skill and another one on turn 5. In this state, it will use a Power attack so make sure to counter it with a Speed attack. One unique thing in this fight is that, destroying the tentacles and the valve will weaken Tentacle Vortex and Steam Surge respectively.
Open Mouth State
| Turn Count | Move |
|---|---|
| Turn 1 | Boulder Throw (AoE Skill) |
| Turns 2-4 Yama Tsukami (Green) might repeat the same move for 1, 2 or 3 turns |
Randomly uses Wait-'n-See, Speed Attack or a Single-Target Skill |
| Turn 3, 4 or 5 | Yama Tsukami Pull (AoE Skill) |
| Turn 4, 5 or 6 onwards Will transition to the Normal state at any turn end after destroying the Mouth |
Repeat moveset from Turns 2 to 4 |
During this state, Yama Tsukami (Green) will have its mouth open while doing either nothing using its Wait-'n-See skill, a skippable single-target skill or a Speed attack so make sure to counter it with a Technical attack. Randomly on turns 3, 4 or 5, it will do a unskipabble AoE skill so make sure to destroy it before it happens or delay it using kinship or disruptive status ailments to buy you more time.
If you managed to destroy its mouth, it will cancel its Yama Tsukami Pull before switching back to the Normal state. Otherwise, it will hit your party with a high damaging AoE skill.
Exposed State
| Turn Count | Move |
|---|---|
| Turn 1 | Steam Surge (AoE Skill) |
| Turns 2-3 Will return to the previous state at the end of turn 3 |
Randomly uses any Power Attack |
In this state, if Yama Tsukami (Green) came from the Normal state, it will use the moveset listed above. However, if it came from the Open Mouth state, it will be overwritten by the Open Mouth state moveset instead. Make sure to use either Speed or Technical attacks depending on what state it was before it is exposed.
After turn 3, it will return back to either Normal or Open Mouth state but will do one Power attack next turn before doing its moveset.
Attack Behaviour Below 50% HP
Normal State
| Turn Count | Move |
|---|---|
| Turn 1 | Power Attack |
| Turn 2 Will transition to Open Mouth state at turn end |
Power Attack |
When it has less than 50% HP and both tentacles are broken, it will only do two turns of Power Attack before returning back to the Open Mouth state. Make sure to counter it with a Speed attack. This is because Yama Tsukami will not be able to regain its tentacles back.
Open Mouth State
| Turn Count | Move |
|---|---|
| Turn 1 | Boulder Throw (AoE Skill) |
| Turns 2 or 3 Yama Tsukami (Green) might repeat the same move for 1 or 2 |
Randomly uses  Speed Attack Will only do 1 Speed Attack or Single-Target Skill below 25% HP |
| Turns 3 or 4 | Yama Tsukami Pull (AoE Skill) Will use this skill one turn earlier guaranteed below 25% HP |
| Turns 4 or 5 onwards Will transition to Normal state at turn end after destroying the mouth |
Repeat moveset from Turns 2 to 3 |
During the Open Mouth state when it has less than 50% HP, Yama Tsukami (Green) will have one less turn before it uses its unskippable AoE skill which gives you less time to prepare. Furthermore, when it is at below 25% HP, it is guaranteed to only take 1 turn after the skippable AoE skill before it uses Yama Tsukami Pull.
At this point, your goal is to destroy the mouth part as fast as possible.
Exposed State
| Turn Count | Move |
|---|---|
| Turns 1-3 Will return to the previous state at the end of turn 3 |
Randomly uses any Power Attack |
When it is exposed, the only difference when it has less than 50% HP is that it will not use its Steam Surge move anymore but instead will take 3 turns of only Power attacks so make sure to counter it with a Speed attack.
However, the same rule applies where if you expose it during the Open Mouth state, the moveset it will reflect is not the one listed above but the Open Mouth instead.
Recommended Monsties for Yama Tsukami (Green)
 Deviljho
|
 Malzeno
|
For the recommended monstie, it is highly advised to bring in dragon-type monsties that does not have any weakness to non-elemental attacks. The earliest strong dragon-type monstie you can get is Deviljho in the Canalta Timberlands but you need to tweak some genes so that it has access to Speed attacks.
The stronger monstie you can get is Malzeno which is capable of dealing high dragon damage while able to take decent damage. However, you need to defeat it first in The Sacrosanctum main story.
How to Beat Yama Tsukami (Green)
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Recommended Level Is at Least 60
When you spawn in Yama Tsukami (Green), it will be at level 60. To survive most of its attacks, you can fight it at levels 55-60 making sure you do not get hit down to 0 HP instantly and deal reasonable damage to it so that the fight does not last long.
EXP Guide: How to Level Up Fast
Equip a Hammer and Use Non-Elemental Armor
It is highly advised to break the parts of Yama Tsukami (Green) as fast as possible to lower the damage of its skills so make use of Hammers especially ones that deal dragon-type damage.
As for your armor, the best you can get at this point of the game is a Gravios U armor for more dragon damage and resistance to non-elemental attacks while providing decent defense stat. You can forge this armor by getting materials when defeating a Black Gravious.
Choose Ogden or Eleanor with a Hammer as Your Battle Ally
At this point of the game, you can use Ogden with a Hunting Horn or Eleanor equipped with a Hammer to help you deal damage to parts and wyvernsoul gauge. However, you need to complete the Chapter 2 side story of Eleanor so you can unlock her secondary weapon.
Focus On the Tentacles to Increase Head-to-Head Attacks
The same with the main story Yama Tsukami fight, you need to focus on destroying its tentacle parts to switch to the open mouth state. However, once you destroy the tentacles, it will never return again and the normal state will be replaced with two attacks you can head-to-head which gives you more opportunity to regain kinship, reapply buffs or inflict status ailments.
Buff Up Your Defense and Wyvernfell Damage
After you've destroyed its valve and one of the two tentacle parts, you can start focusing on enhancing your defense and attack so that you can close out the fight much faster and take some hits in exchange for more damage, reapply buffs or charge up kinship gauge.
You Have 3-5 Turns to Destroy the Mouth Part
During the Open Mouth state, you only have 3-5 turns to destroy the mouth before it uses a skill called Yama Tsukami Pull that deals high AoE damage to your party. When it has more than 50% HP, you have a chance of getting 3, 4 or 5 turns before it uses the unskippable AoE skill. However, when it has less than 50% HP, you will only have a chance to get either 3 or 4 turns.
Lastly, when it has less than 25% HP, it is guaranteed to always use its Yama Tsukami Pull on turn 3 no matter what so make sure you can destroy the mouth or at the very least, be able to take its damage.
Every 1/4th Health Reduced Above 50% HP Is a Checkpoint
A unique thing with Elder Dragon fights is the ability to repel the boss if you are able to reduce a specific amount of health and then dying. You can then redo the fight and the enemy will have reduced health when you start the battle again but you will not get the decoration for defeating the boss in a single fight.
How to Fight Yama Tsukami (Green)
Fight Enemies During the Night
You can spawn Yama Tsukami (Green) in the Bountiful Dunes in Tarkuan after you defeat enemies during night time. Once you activate a cutscene for Tarkuan, you will see a flying Yama Tsukami so make sure to use the updrafts to launch yourself in the air and fight it.
You can access night time after completing the main story, Endangered Species.
Yama Tsukami (Green) Rewards
Dragonmoss After Repelling or Losing the Fight
Even if you only repel or lose the fight against Yama Tsukami (Green), you will still get exactly 1 Dragonmoss that you can use to craft various powerful non-elemental Hunting Horn, Bow and Gunlance.
New or Enhanced Ally and Equipment Skills
| Skill | Effects |
|---|---|
| Heroic Testament and Follower Testament |
Increases maximum HP and damage dealt to enemies and reduces damage taken. |
If you managed to defeat Yama Tsukami (Green) from full health to zero in a single fight without repelling it, then you will receive a decoration called Heroic Testament while all your battle allies will receive a passive skill called, Follower Testament even if you repelled the boss.
If you already have one in your possession, it will upgrade the ones you have one level higher (S → M → L → XL) with each level increasing the effect of the skill.
List of All Decorations and Equipment Skills
Improved Tarkuan Habitat Stat Increases
Once you defeat Yama Tsukami (Green), every egg obtained and hatched in Tarkuan will have a bonus increase in their Maximum HP stat.
Monster Hunter Stories 3 (MHS3) Related Guides
Main Mission Bosses
| All Main Mission Bosses | |
|---|---|
| Azuria (Chapter 1) | |
 Feral Chatacabra |
 Honed Glavenus |
 Invasive Yian Garuga |
 Dual Feral Velocidromes |
 Feral Gypceros |
 Magnamalo |
Cataracts (Chapter 2) |
 Feral Great Izuchi
|
 Invasive Arzuros |
 Feral Somnacanth |
 Feral Aknosom |
Yama Tsukami |
- |
| Galyad (Chapter 3) | |
 Almudron |
 Feral Ajarakan |
 Feral Rakna-Kadaki |
 Rey Dau |
| Serathis (Chapter 4) | |
 Feral Blangonga |
 Goss Harag |
Malzeno |
 Arkveld |
 Bound Azure Rathalos |
 Bound Lunagaron |
 Aenshin |
|
Invasive Monster Bosses
| All Invasive Monster Bosses | |
|---|---|
| Invasive Yian Garuga |
 Invasive Seregios |
 Invasive Plesioth |
Invasive Arzuros |
 Invasive Nerscylla |
 Invasive Shogun Ceanataur |
 Invasive Diablos |
 Invasive Odogaron |
 Invasive Khezu |
- |
Feral Monster Bosses
| List of All Feral Monsters | |
|---|---|
| Azuria | |
 Feral Paolumu |
 Feral Nerscylla |
 Feral Brachydios |
- |
| Canalta Timberland | |
 Feral Tobi-Kadachi |
 Feral Tetranadon
|
 Feral Bishaten |
 Feral Espinas |
| Tarkuan | |
 Feral Barroth |
 Feral Gravios |
 Feral Glavenus |
 Feral Deviljho |
| Serathis | |
 Feral Legiana |
 Feral Magnamalo |
Elder Dragon Bosses
| List of All Elder Dragon Bosses | |
|---|---|
 Namielle |
  |
| Yama Tsukami (Green) |
 Velkhana |
| Aenshin |
 Nergigante |
Exotic Monster Bosses
| List of All Exotic Monster Bosses | |
|---|---|
 Exotic Seregios |
 Exotic Velocidrome |
Optional Bosses
| List of All Optional Bosses | |
|---|---|
 Espinas
|
Deviljho |
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