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

This guide will detail the most effective methods for leveling up your towers and securing that crucial hitpoint advantage.
The Primary Source: Upgrading Cards
However, the ratio of gold spent to experience gained changes drastically depending on the level of the upgrade.

Upgrading a card from level one to level two costs virtually nothing and provides a very high amount of XP per gold coin spent.
Mastering cards often grants massive XP bonuses.Spells rely heavily on level interactions.Gold is the ultimate bottleneck for base progression. The Secondary Source: Clan Donations
Many players are stingy, refusing to donate cards because they want to hoard everything for themselves.

This is why joining an active clan of fifty people who constantly request cards is absolutely mandatory for free-to-play users.
Guild RequestThe BenefitSkeletons, GoblinsSmall amount of XP per card, but you can donate hundreds of them dailyValuable TroopsLarge burst of XP, but highly limited in how many you can give The Impact of King Levels
If your king tower was one level higher, it would possess several hundred more hitpoints, turning that loss into a win.

A higher level tower might kill a goblin in two shots instead of three, preventing thousands of points of chip damage over a match.

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