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

Therefore, understanding exactly how to efficiently generate account experience points (XP) is vital for long-term survival on the ladder.
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.
Your deck is your sword.The cost is microscopic, but the XP bump is significant.Balance is required. The Guild Economy
Many players are stingy, refusing to donate cards because they want to hoard everything for themselves.

You are essentially converting cards you will never use into base hitpoints and currency.
Progression ActionEfficiencyStarter LevelingIncredibly high efficiency; the absolute best way to gain quick XP if you have a slight gold surplusMaxing OutExtremely low efficiency; costs 100,000 gold for a tiny XP bump, but mandatory for competitive viability The Margin of Victory
If your king tower was one level higher, it would possess several hundred more hitpoints, turning that loss into a win.

Never neglect your base progression; it is the silent protector that wins games.

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