However, ignoring the vertical space—the 'Z-axis' of the arena—is a fatal flaw that will immediately stall your progression on the competitive ladder.

Flying units operate under a completely different set of physical rules than ground units.
The Danger from Above
The Balloon will simply float over your defending ground troops, drop a single bomb, and instantly delete a massive chunk of your tower's health.

Because flying units avoid so many standard defensive interactions, they require highly specialized, immediate answers.
Never build a deck with only one anti-air card.Flying anti-air units (like Mega Minion) are safer because they avoid ground melee.Always space your anti-air units apart. Choosing Your Air Guards
A mathematically sound deck requires at least two reliable anti-air units and one spell capable of hitting air targets.

Choosing the correct combination of these three roles ensures that you are never caught without an answer when the opponent takes flight.
The DefenderTop Card ChoicePrimary RoleThe Ranged SniperMusketeer / Dart GoblinPlaced centrally to shoot down Balloons from a safe distance; highly vulnerable to spellsThe Air AssassinMega Minion / PhoenixPlaced directly on top of the enemy air threat; immune to ground damage, survives medium spells Total Coverage
You must respect the skies and build your defenses with complete vertical coverage in mind.

When the shadow of a Balloon falls across your tower, you must be ready.

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