Deck upgrade calculator

Pick cards or just set a rarity per slot — the cost depends only on rarity and levels, so you don’t need specific cards. Set current and target levels and we’ll count the copies and gold, plus the gems it takes to buy any copies you’re short of. Levels of player #88GP99Y.

Total to target

570K
Gold
19.5K
Copies
10.8K
Gems
Common
19,445
Legendary
18

Every level costs copies + gold. If you don’t have enough copies, the missing ones can be bought with gems — so an upgrade is either copies + gold, or gems (for the missing copies) + gold. Gem prices follow the official table (December 2025), proportional to the shortage; gold itself is not converted to gems.

  • Skeleton Barrel1
    4.9K copies120K gold1.8K gems
    Now
    15
    Target
    16
  • Valkyrie2
    0 copies0 gold0 gems
    Now
    16
    Target
    16
  • Bats3
    11.7K copies210K gold4.2K gems
    Now
    14
    Target
    16
  • Skeleton Army4
    0 copies0 gold0 gems
    Now
    16
    Target
    16
  • Arrows5
    2.9K copies120K gold1.1K gems
    Now
    15
    Target
    16
  • Goblin Gang6
    0 copies0 gold0 gems
    Now
    16
    Target
    16
  • Balloon7
    0 copies0 gold0 gems
    Now
    16
    Target
    16
  • Miner8
    18 copies120K gold3.8K gems
    Now
    15
    Target
    16