Random Number Generation, or RNG, is a highly debated topic in almost every competitive video game genre.

In the context of lane-pushing arena battlers, RNG is typically minimized compared to card games or auto-battlers.
Starting Hands and Card Rotation
Your starting hand is entirely random, which can immediately put you at a massive disadvantage against an aggressive opening.

By ensuring a healthy mix of low-cost cycle cards, they guarantee they will always have some form of defense.
Flexibility is a skill.Know what they are holding.It prevents matches from feeling perfectly scripted. Troop Movement Quirks
Sometimes a unit will retarget unexpectedly due to a micro-movement by another troop, completely ruining your defensive setup.

Leaving a slight margin for error in your defensive placements is the best way to handle AI unpredictability.
Game StyleRNG DependencyAuto-ChessLuck is the primary factor in individual matchesStandard Tower RushMatches are decided by placement, timing, and resource tracking Accepting Randomness
The most important skill regarding RNG is learning how to control your emotions when luck inevitably turns against you.

If you are stuck in a lower arena, it is because of your fundamental mechanics, not the random number generator.