However, one of the most fatal deck-building errors is neglecting to include a robust, reliable suite of anti-air defenses.

Flying units completely ignore the river, bypass all ground-targeting defensive buildings, and are immune to crucial spells like The Log or Earthquake.
The Aerial Behemoths: Lava Hound and Balloon
Because the Lava Hound has an absurdly high hitpoint pool, it demands the immediate attention of all your air-targeting defenders.

To survive this assault, you must have at least two reliable anti-air units in your deck, along with a defensive building that targets air (like the Tesla or Inferno Tower).
His spawn damage and constant stun effect drastically slows down the Balloon's approach.When the Hound dies, it bursts into a swarm of flying pups.If your deck relies entirely on ground defense, you will lose. Choosing Your Sky Sweepers
The Musketeer is the gold standard of versatile defense; she boasts incredible range, high single-target DPS, and survives a standard Fireball.

Furthermore, you must consider air-to-air combat; including your own flying units (like Mega Minion or Phoenix) provides a mobile defense that ground units cannot touch.
Enemy UnitBest CounterInferno Dragon (High escalating damage)Electro Wizard or Zap spell; the constant stun resets the damage beam completelyMinion Horde (Massive flying swarm)Arrows or Fireball; never try to defend this with single-target units, as they will be overwhelmed instantly Watching the Skies
You must respect the Z-axis and prepare your arsenal accordingly.

If your towers fall to the Balloon every time, you must redesign your support structure.

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