Quick reference

Balance first, specialise second

Trove Collection improves troop attack and defence through six collection items. Matching-level bonuses reward steady early progression across the whole collection.

Unlock
Warden Office level 26
Collection
Six items across three troop types
Early target
Epic Tier 1 on every item

Collection items

Collection pairTroop typeBonuses
Knuckles and HelmetShieldbearerAttack and defence
Frag Grenade and High-Explosive GrenadeBomberAttack and defence
Short Gun and Long GunShooterAttack and defence

Matching-level bonuses

3 itemsAdditional defence for Shieldbearers, Bombers and Shooters.
6 itemsAdditional attack for Shieldbearers, Bombers and Shooters.

The bonus is controlled by the lowest qualifying item. Five advanced items cannot activate a six-item bonus while the sixth remains below the required threshold.

Upgrade data

Trove Souvenir Coin requirements

42 upgrade stages

Values follow the coin order supplied for the collection system. A zero means that coin type is not required for that stage.

TierStageCommonRarePreciousLegendary
UncommonBase3,0003000
Uncommon1 star7,5007500
RareBase13,50013500
Rare1 star20,00020000
Rare2 stars5,00050700
Rare3 stars6,00060800
EpicBase7,00070900
Epic1 star8,000801000
Epic2 stars9,000901100
Epic3 stars10,0001001200
Epic Tier 1Base15,0001501400
Epic Tier 11 star20,0002001500
Epic Tier 12 stars25,0002501700
Epic Tier 13 stars30,0003002100
LegendaryBase41,000410900
Legendary1 star43,000430900
Legendary2 stars47,0004701000
Legendary3 stars49,0004901000
Legendary Tier 1Base53,0005301000
Legendary Tier 11 star57,0005701200
Legendary Tier 12 stars61,0006101200
Legendary Tier 13 stars66,0006601200
Legendary Tier 2Base71,0007101200
Legendary Tier 21 star83,0008301600
Legendary Tier 22 stars88,0008801700
Legendary Tier 23 stars95,0009501800
ExoticBase100,0001,00018015
Exotic1 star105,0001,05019020
Exotic2 stars110,0001,10020020
Exotic3 stars115,0001,15021025
Exotic Tier 1Base120,0001,20024525
Exotic Tier 11 star125,0001,25025530
Exotic Tier 12 stars130,0001,30026530
Exotic Tier 13 stars135,0001,35027535
Exotic Tier 2Base140,0001,40031035
Exotic Tier 21 star145,0001,45031540
Exotic Tier 22 stars150,0001,50032540
Exotic Tier 23 stars160,0001,60033545
Exotic Tier 3Base165,0001,65035045
Exotic Tier 31 star170,0001,70036550
Exotic Tier 32 stars175,0001,75038550
Exotic Tier 33 stars180,0001,80041055

Recommended progression

  1. Establish the baselineRaise all six collection items evenly to Epic Tier 1.
  2. Strengthen the frontlinePrioritise Knuckles toward Legendary Tier 2.
  3. Increase backline damageAdvance Short Gun and Long Gun toward Legendary Tier 2.
  4. Return to set bonusesBring Helmet and both Bomber items forward when the priority targets are complete.
Focused or balanced progression

Focused

Use this when Shieldbearer durability or Shooter damage is the clear weakness. Keep the remaining items at the Epic Tier 1 baseline while priority items advance.

Balanced

Raise all six items toward the next matching tier when every troop type is used heavily or the next six-item attack bonus is close.

Tier limits and materials

Before Forticlad Era 3, the stated maximum is Legendary Tier 2 at three stars. From Forticlad Era 3 onward, the maximum increases to Exotic Tier 3.

Save resource-selection chests until a specific breakpoint is chosen. Coin rewards may also appear in activity rewards, progression milestones, temporary rotations and Trove reward systems.

Common mistakes

Watch out

  • Concentrating on one item before securing early set bonuses.
  • Advancing five items while leaving the sixth below a shared threshold.
  • Spending higher-tier coins without a defined target.
  • Prioritising Bomber items before the main frontline and backline needs are met.
  • Opening selection chests without knowing which breakpoint they will complete.

Best overall strategy

Complete Epic Tier 1 across all six items

Then concentrate on Knuckles, Short Gun and Long Gun. This secures the early shared bonuses while improving Shieldbearer frontline durability and Shooter backline damage.