The presence of luck-based mechanics in a strategy game can be both a blessing and a massive frustration.

In the context of lane-pushing arena battlers, RNG is typically minimized compared to card games or auto-battlers.
Starting Hands and Card Rotation
If your opponent rushes the bridge and all your cheap defensive counters are at the bottom of your deck, you lose the tower.

By ensuring a healthy mix of low-cost cycle cards, they guarantee they will always have some form of defense.
Never run a deck that is too heavy.Don't panic if your starting hand is bad.It happens to everyone. The Unpredictable AI
Sometimes a unit will retarget unexpectedly due to a micro-movement by another troop, completely ruining your defensive setup.

Relying on a unit's aggro range down to the exact pixel is risky because tiny bumps can alter their trajectory.
Battler CategoryRandomness ImpactDrafting GamesExtremely High - Relies entirely on shop rolls and item dropsStandard Tower RushVery Low - Only the starting hand is randomized The Mental Game
The best competitors accept the chaos, focus on what they can control, and outplay the opponent regardless.

Over the course of a thousand games, the luck factor completely evens out for everyone.