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 #VCL9Q89LG.

Total to target

1.5M
Gold
45.9K
Copies
18.6K
Gems
Common
44,816
Rare
1,130

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.

  • Cannon1
    17.9K copies310K gold6.4K gems
    Now
    12
    Target
    16
  • Knight2
    0 copies0 gold0 gems
    Now
    16
    Target
    16
  • Giant Snowball3
    12.8K copies310K gold4.6K gems
    Now
    12
    Target
    16
  • Goblin Drill4
    0 copies0 gold0 gems
    Now
    16
    Target
    16
  • Rocket5
    1.1K copies310K gold2.4K gems
    Now
    12
    Target
    16
  • Skeletons6
    0 copies0 gold0 gems
    Now
    16
    Target
    16
  • Bomber7
    1.7K copies270K gold608 gems
    Now
    13
    Target
    16
  • Fire Spirit8
    12.4K copies270K gold4.5K gems
    Now
    13
    Target
    16