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

Understanding exactly where randomness factors into the equation allows top players to mitigate its negative effects.
Starting Hands and Card Rotation
The most prominent RNG element in card-based battlers is the initial four cards you are dealt at the start.

Once the initial hand is played, the rotation becomes fixed, and pure skill and memory take over.
Flexibility is a skill.Know what they are holding.Some RNG is healthy for the game. The Unpredictable AI
Another subtle layer of RNG comes from the slight inconsistencies in how the game's AI handles pathfinding.

Leaving a slight margin for error in your defensive placements is the best way to handle AI unpredictability.
Game StyleLevel of LuckAuto-ChessSkill comes from long-term statistical managementStandard Tower RushHighly skill-dependent after the first 30 seconds 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.