Deck maintenance is an important part of the game. It includes not only building Attack, Defense, and Elemental units, but also deck expansion. Ensuring your deck is able to field the cards you want by increasing Deck Cost and not running out of space to hold new cards will help you take down more powerful enemies. For specific strategies on what types of cards you should look for when battling certain enemies, see our Deck Guides pages.
Players start with 3 available slots in their Attack unit. Two more slots can be unlocked by building an Arena and upgrading it to level 2.
Each card added to the unit will increase your Deck Cost based on how much the cards cost. This is good to keep in mind while upgrading cards since their cost will increase and might make them unusable with your current team.
Like Attack unit, Defense unit starts with 3 slots that can be increased to 5 by building and upgrading a Fort.
This unit can't be controlled so using cards with self buffs or activate-on-hit effects is not recommended.
If you lose a Duel, every card in the team will lose 10% of their current soldiers.
Unlike Attack and Defense units, Elemental Units always have 5 slots.
Cards used for Attack or Defense units can also be assigned for Elemental units.
Cards in Elemental units can be used for different elements but can't be used for different teams within the same element.
Damage taken during battles with Elemental Units will not reduce the soldier count of affected cards.
Depending on your team, various Unit Bonuses will activate. These are passive buffs for your team that increase the base ATK / DEF of the team by certain % (based on the bonus)
It's possible to stack the Bonuses to receive greater bonus. For example, having 5 GUR Light cards would provide 35% more ATK for every card in the unit (25% for GUR and 10% for Light element).
These bonuses work for Attack, Defense and Elemental Hall teams.
Deck Cost determines how many cards you can fit in your Attack, Defense or Elemental Hall teams. Each player starts the game with 90 Deck Cost, which can be increased as you progress through the game. Deck cost increase items can be obtained through Kingdom level ups, Shop Purchases, or building Barracks and leveling them. There are also sometimes limited shop purchases or Summons which offer Deck Cost.
Each card has their own cost that varies between 15 for N cards and 273 for XLR cards.
The required deck cost for full teams of:
- GSR - 320
- GUR - 495
- GLR - 1050
- XLR - 1365
Increasing Deck Cost
|Barracks||336 (6 x 56)
(138 with 3 lv10)
|[9,800](Castle 12 and lv11 x 6)|
|Beginner Support Set||30||[1,000]|
|Head Start Pack||130 (50 + 80)||[9,800]|
|Level Rewards||Level 300: 245
Level 200: 225
Level 100: 188
Level 1: 90
- 1x +80 DC item from Returnee Special Set (M) for [5,000]
- 1x +30 DC item from Returnee Special Set (S) for [1,500]
|Date||Campaign/Offer||Description||Inclusive DC Limit||Cost|
|Jun 6-19, 2017||LR Step-Up Summon||Received from performing at least one Lap 1, Step 5||DC +80||12,000|
|Oct 11-17, 2017||9M Download Campaign||9M Users Commemoration SP Pack (M)||DC +80||9,999|
|9M Users Commemoration SP Pack (S)||DC +30||3,000|
|Oct 17 - Nov 1, 2017||Limited Step-Up Summon||Received for each Lap 1, Step 4||DC +20||6,000|
|Received for each Lap 2, Step 4||DC +50|
|Dec 11-18, 2017||Tower-Event Support Set||DC +80||4,500|
|Jan 1-5, 2018||New Year 2018 Lucky Bags||Year 2018 Lucky Bag (Pine)||DC +80||9,999|
|Year 2018 Lucky Bag (Bamboo)||DC +50||x,xxx|
|Year 2018 Lucky Bag (Plum)||DC +30||x,xxx|
|Oct 16-31, 2018||10M Users Commemoration SP Packs||10M Users! SP Pack (M)||DC +80||5,000|
|10M Users! SP Pack (S)||DC +50||2,500|
|Nov 30-Dec 14, 2018||Tower-Event Support Set||DC +80||4,500|
|Dec 10-27, 2018||Christmas Treasure Hunt Campaign||Treasure Hunt Set (M)||DC +20||5,000|
|Treasure Hunt Set (S)||DC +10||3,000|
|Jan 1-7, 2019||New Year 2019 Lucky Bags||2019 Lucky Bag (Pine)||DC +50||9,000|
|2019 Lucky Bag (Bamboo)||DC +30||5,000|
|2019 Lucky Bag (Plum)||DC +30||3,000|
|Feb 25-28, 2019||Demon Realm Event Support Sets||Demon Realm Pack (L)||DC +30||9,000|
|Demon Realm Pack (S)||DC +50||1,500|
|Demon Realm Pack (M)||DC +30||3,000|
|April 26-29, 2019||6th Year Alliance Bingo Pack||limit to 2 purchases per account||DC +50||3,000|
When starting the game, players will have 75 card limit in their deck and 10 in their collection.
It's possible to get a free Card Limit +15 item by clearing area 10-6 in Celestial Realm.
It can further be expanded with Card Limit +5 items that cost  up to 90 times.
Collection can be expanded up to 99 pages for  per page.
Cards stored in Collection tab must be withdrawn before they can be used for upgrading or assigned to different units. At this time, collection pages have no searching or filtering options to find specific cards and must be organized manually.
There were also limited-time offers that included items to increase card limit: