Shop

Summary

 * The Shop includes Cards, Treasure Chests, Gems, and Gold.
 * The Shop is unlocked at Goblin Stadium (Arena 1).

Cards

 * The selection of Cards in the shop changes daily.
 * Below Arena 8, this selection is chosen from all non- cards unlockable from your Arena, including those you have not unlocked yet.
 * At Arena 8, Legendary cards will occasionally show up in the shop, again including those you have not unlocked yet.
 * You can buy several of the same card, but the price increases linearly with each subsequent purchase.
 * 3 random cards, of Common, Rare & Epic rarities, are shown everyday, except Sundays,
 * On Sundays (Epic Sunday), 6 different cards are shown, instead of 3 different cards (2 Commons, 2 Rares, 2 Epics).
 * In a daily rotation, each player can buy up to 100 Commons, 50 Rares, 10 Epics, or 3 Legendaries, at increasing prices once one of the respective card rarities are bought. (If a legendary card shows up in the shop, one of the other rarities will not.)
 * The prices of common cards start at 2 Gold, the prices of rares start at 20 Gold, the prices of epics start at 2,000 Gold, and the prices of legendaries start at 40,000 Gold.
 * The prices for the various rarities of cards purchased increases, represented by the following equations: Commons, y=2x gold, Rares, y=20x gold, Epics, y=2,000x gold, and Legendaries, y=40,000x gold, where x is the number of the card being purchased, and y being the cost of the card.
 * The total cost to buy the first x cards for each rarity is given by the equations: Commons, y=x(x+1) gold; Rares, y=10x(x+1) gold; Epics, y=1000x(x+1) gold, and Legendaries, y=20000x(x+1) gold, where y is the total cost and x is the number of cards bought.
 * Legendary cards don't show up at the shop below Arena 8, so you can only obtain them by opening Chests in all other Arenas.
 * When tapping a card in the Shop, the card will flip over and display a white question mark on a background of the rarity color.
 * All of the cards of one type can be bought at once if the player has enough Gold to do so.

Treasure Chests

 * You cannot buy Wooden, Free, Silver, Golden, or Crown Chests.
 * The arena number chest you can get corresponds with your current Arena.
 * The price for each varies according to your current Arena.
 * Different chests give you different rewards. Super Magical chest have a higher chance of getting legendaries than Magical chest, which in turn have a higher chance of getting some than a Giant chest.
 * The better the Chest is, the better the rewards (more gold, more cards, and higher rarity of the cards) will be.
 * The exception is Giant chest, which drops approximately 3 times as much gold as the Magical chest. However, the Magical chest drops a variety of cards (various Commons, Rares and some Epics). On the other hand, it is very uncommon to get cards with a higher rarity than Rare in a Giant chest, instead you get large amount of 1-2 Commons (80+ combined or higher dependent on Arena) and a good amount of the same Rares (10-25 partialy dependant on arena).
 * The Giant chest can potentialy drop better loot than the Magical chest. However the Magical chest is much more reliable.

Gems

 * The price of Gems depends on the player's country.
 * There are 6 Gem bundles available to be purchased.

Gold

 * There are 3 Gold bundles available to be purchased.

Trivia

 * On 29/2/16, the February Update changed the Silver and Golden Chests available in the shop with Giant and Super Magical Chests.
 * On 3/5/16, the May Update changed the cost rate of all cards in the shop to a linear growth (from exponential growth) and made occasionally possible to buy Legendary Cards for the players that have reached the Legendary Arena (Arena 8) In addition, it redesigned the shop, adding a shopkeeper holding an animated clock.

MagasinShop