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Block Rate Up is an Aux Core or a Skill RAM/Upgrade in Xenoblade Chronicles 2 and Torna ~ The Golden Country. It boosts Block Rate by up to 22%.

The Skill RAM/Upgrade variants can be used to customize Poppi α, Poppi QT and Poppi QTπ as an Aux Core equivalent.

Stats

Aux Core
Aux Core Rarity Effect Sell Price
Unrefined Refined
Block Rate Up I Rarity1.png Boosts block rate by 10%. 400 G 450 G
Block Rate Up II Rarity1.png Boosts block rate by 12%. 1,100 G 1,200 G
Block Rate Up III Rarity2.png Boosts block rate by 15%. 1,750 G 1,950 G
Block Rate Up IV Rarity2.png Boosts block rate by 17%. 2,150 G 2,350 G
Block Rate Up V Rarity3.png Boosts block rate by 20%. 2,350 G 2,600 G
Block Rate Up VI Rarity3.png Boosts block rate by 22%. 2,950 G 3,250 G

Skill RAM
Skill RAM Effect Energy
Required
Ether Crystals Technical Manual
Create Crystallize
Block Rate Up I Boosts block rate by 10%. 25 150 90 Nimble Nopon Get Girls
Block Rate Up II Boosts block rate by 12%. 50 500 200 Nimble Nopon Get Girls
Block Rate Up III Boosts block rate by 15%. 75 900 330 Artificial Blade Report
Block Rate Up IV Boosts block rate by 17%. 100 1,400 490 Ether R&D Revolution
Block Rate Up V Boosts block rate by 20%. 125 3,600 900 Hypertech Made Easy

Refinement Recipes

Aux Core Requirement Materials Amount
Block Rate Up I Category Any Ore Collectibles x3
Block Rate Up II Category Any Ore Collectibles x6
Block Rate Up III Category Any Ore Collectibles x9
Block Rate Up IV Category Any Ore Collectibles x12
Block Rate Up V Category Any Ore Collectibles x15
Block Rate Up VI Category Any Ore Collectibles x18

Sources

Xenoblade Chronicles 2

In Xenoblade Chronicles 2, the Aux Core is always obtained in its unrefined state, and must be refined within an Ether Furnace at an Aux Core Stall before becoming usable.

Block Rate Up I

Merc Mission Rewards

Dropped by

Name Spawn Area Level Rate
Mailoo Garaffa Normal Kingdom of Uraya 19 - 22 12.0%
Massido Ardun Normal Kingdom of Uraya 17 - 25 12.0%
Nuruba Upa Normal Kingdom of Uraya 20 - 23 12.0%
Sugar Wisp Normal Kingdom of Uraya 20 - 27 12.0%
Water Hiln Normal Kingdom of Uraya 20 - 26 12.0%

Block Rate Up II

Treasure Troves

Merc Mission Rewards

Dropped by

Name Spawn Area Level Rate
Ardainian Private Quest Empire of Mor Ardain 30 - 35 10.8%
Barz Gyanna Normal Empire of Mor Ardain 32 - 34 10.8%
Dobri Urchon Salvaging Leftherian Archipelago 32 - 36 10.8%
Fort Igna Normal Empire of Mor Ardain 29 - 34 10.8%
Garnia Camill Normal Leftherian Archipelago 32 - 36 10.8%
Imbalanced Gogol Quest (DLC) Leftherian Archipelago 45 10.8%
Laplas Driver Quest Kingdom of Uraya 36 10.8%
Night Avys Quadwing Normal Leftherian Archipelago 34 10.8%
Parady Tirkin Normal Leftherian Archipelago 30 - 35 10.8%
Shimmun Tirkin Normal Leftherian Archipelago 30 - 35 10.8%
Venal Igna Normal Empire of Mor Ardain 32 - 36 10.8%
Vool Igna Normal Empire of Mor Ardain 31 - 35 10.8%
Weirdo Gillick Quest Empire of Mor Ardain 36 10.8%
Zigul Tirkin Normal Leftherian Archipelago 30 - 33 10.8%

Challenge Battle Mode (DLC)

Challenge Name Difficulty Chest 1 Chest 2 Chest 3
Bewitching Dance CR2.png --- 0.82% 0.74%
Grazing Flock CR1.png --- 1.10% 1.04%
Pest Control CR1.5.png --- 0.50% 0.46%
Think of the Soldiers CR2.5.png --- 1.68% 1.64%
Titan Battleship Assault Special Battle --- 1.47% 1.40%

Block Rate Up III

Quest Rewards

Dropped by

Name Spawn Area Level Rate
Autumn-Shower Melvin Quest Kingdom of Tantal 46 9.6%
Dorrl Parisax Normal Spirit Crucible Elpys 45 - 47 9.6%
Excavator Darius Unique Spirit Crucible Elpys 46 9.6%
Mabas Urchon Salvaging Temperantia 43 - 47 9.6%
Radys Driver Quest Kingdom of Tantal 47 9.6%
Seveeto Laia Normal Spirit Crucible Elpys 42 - 46 9.6%
Strom Gyanna Normal Kingdom of Uraya 47 - 49 9.6%
Sygian Aspid Normal Spirit Crucible Elpys 45 - 47 9.6%
Vashar Caterpile Normal Spirit Crucible Elpys 45 - 47 9.6%

Block Rate Up IV

Merc Mission Rewards

Dropped by

Name Spawn Area Level Rate
Haywire Kustal Unique World Tree 60 8.4%
Runaway Train Bool Unique Temperantia 55 8.4%
Ziggan Garlus Normal Kingdom of Tantal 50 - 55 8.4%

Block Rate Up V

Merc Mission Rewards

Dropped by

Name Spawn Area Level Rate
Antecedent Xiaxia Unique Empire of Mor Ardain 99 7.2%
Burrig Parisax Normal Kingdom of Uraya 63 - 65 7.2%
Canzin Lexos Normal Cliffs of Morytha 60 - 62 7.2%
Familion Sovereign Summon World Tree 65 7.2%
Reeking Douglas Unique Gormott Province 104 7.2%
Svarm Nest Quest (DLC) Empire of Mor Ardain 88 7.2%
Turbulent Keaton Quest (DLC) Temperantia 66 7.2%
Vengeful Zadazan Quest Leftherian Archipelago 69 7.2%

Challenge Battle Mode (DLC)

Challenge Name Difficulty Chest 1 Chest 2 Chest 3
Attack of the Aspar Special Battle --- 0.56% 0.66%
Call the Exterminators Special Battle --- 0.92% 1.19%
Darkening Skies CR3.png --- 0.54% 0.66%
Dread Contagion CR4.png --- 0.76% 0.95%
Elma: Redux CR4.png --- 0.37% 0.43%
Otherworldly Fighter CR3.png --- 0.37% 0.43%
Panic at the Seaside CR3.png --- 0.22% 0.24%
Poisoned Paradise CR3.png --- 0.92% 1.19%
Sacred Wood CR3.png --- 0.90% 1.19%
Serious Showdown CR4.5.png --- 0.22% 0.24%
Temperantian Standoff CR2.png --- 0.22% 0.25%
This Year's Heropon CR3.png --- 0.36% 0.43%
Tiger! Tiger! IRL CR2.5.png --- 0.22% 0.24%
Torna's Finest CR4.png --- 0.76% 0.93%

Block Rate Up VI

Challenge Battle Mode (DLC)

Challenge Name Difficulty Chest 1 Chest 2 Chest 3
9th Imp. Armored Div. CR5.png 0.83% 0.33% ---
Chickenheart Challenge CR3.png 2.35% 1.08% ---
Cloud King's Revenge CR4.png 0.48% 0.18% ---
Dino Drama CR3.5.png 1.20% 0.48% ---
Fiercest Faction CR4.png 0.48% 0.18% ---
Humanoid Alliance CR4.png 0.93% 0.18% ---
Mk. VIII CR4.5.png 2.25% 1.08% ---
Reinventing the Gogol CR4.png 0.84% 0.33% ---

Torna ~ The Golden Country

In Torna ~ The Golden Country, the Aux Core is always obtained in its refined state.

Block Rate Up I

Treasure Troves

Dropped by

Name Spawn Area Level Rate
Aurea Ardun Normal Kingdom of Torna 20 - 26 12.0%
Avero Tirkin Normal Kingdom of Torna 20 - 22 12.0%
Parole Tirkin Normal Kingdom of Torna 19 - 21 12.0%

Block Rate Up II

Quest Rewards

Dropped by

Name Spawn Area Level Rate
Coora Nest Normal Gormott 31 - 38 10.8%
Gneo Ropl Normal Gormott 28 - 36 10.8%

Block Rate Up III

Treasure Troves

Block Rate Up IV

Dropped by

Name Spawn Area Level Rate
Flying Fortress Desmor Unique Kingdom of Torna 55 8.4%

Skill RAM / Upgrade

Poppiswap

The Skill RAM or Upgrade variant can be crafted through Poppiswap's "Create/Crystallize" menu using Ether Crystals obtained from Tiger! Tiger! or from crystallizing other Poppi Parts. Create costs and required Technical Manuals are present in the Stats section.

Tiger! Tiger!

Skill RAM Stage Treasure
Size
Treasure Rate (per Trove)
Chapter 2 – 7 Chapter 8+
Block Rate Up I Stage 2 Small 1.50% ---
Block Rate Up III Stage 2 Small 0.75% 4.00%
Block Rate Up V Stage 2 Large --- 0.80%
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