While upgrading individual unit cards is the primary focus of combat, managing your overarching account level is equally critical.

Many players inadvertently stall their base progression by hoarding resources or ignoring the social systems of the game.
Leveling Up the Deck
However, the ratio of gold spent to experience gained changes drastically depending on the level of the upgrade.

If your sole goal is to level up your king tower quickly, upgrading all of your low-level cards evenly is the most cost-effective method.
Farm masteries in casual modes.A high-level tower means nothing if your spells are weak.Gold is the ultimate bottleneck for base progression. The Secondary Source: Clan Donations
This is a massive progression error; donating provides both gold and crucial experience points instantly.

You are essentially converting cards you will never use into base hitpoints and currency.
Card RarityExperience GainedSkeletons, GoblinsSmall amount of XP per card, but you can donate hundreds of them dailyFireballs, P.E.K. If you have any sort of concerns concerning where and ways to use tower rush, you can call us at our webpage. K.ALarge burst of XP, but highly limited in how many you can give The Margin of Victory
You might wonder if grinding out that next account level is truly worth the massive gold investment.

Furthermore, higher level towers deal more damage per shot, altering crucial interactions against enemy swarms.