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

However, it still exists in subtle ways that can completely alter the outcome of a very close match.
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.

Once the initial hand is played, the rotation becomes fixed, and pure skill and memory take over.
Never run a deck that is too heavy.Cycle your cheapest cards in the back.Accept that sometimes you will lose to a lucky start. Troop Movement Quirks
While developers strive to make AI as predictable as possible, the physics engine can occasionally create chaotic results.

Relying on a unit’s aggro range down to the exact pixel is risky because tiny bumps can alter their trajectory.
Genre TypeRNG DependencyAuto-BattlersSkill comes from long-term statistical managementStandard Tower RushMatches are decided by placement, timing, and resource tracking Accepting Randomness
Getting angry at a bad starting hand only causes you to make further mistakes and lose the match entirely.

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