Behind the colorful graphics and intense gameplay of every successful arena battler lies a complex, invisible mathematical engine.

Many players believe that matchmaking is intentionally rigged against them, constantly forcing them to fight 'hard counters' after a win streak.
The Elo System Adapted
Your trophy count is a numerical representation of your skill; win a match, and you take trophies from the loser.

This is why winning streaks inevitably end in a 'wall' of difficult matches; the system is functioning exactly as intended.
Do not expect to win every game.Queue times increase at the top of the ladder.You will eventually stabilize. The Free-to-Play Dilemma
The standard Elo system works perfectly for chess because all pieces are equal, but tower rush games feature upgradeable cards.

To combat this, developers have implemented secondary checks that look at the player's King Tower level.
System PriorityImportance LevelElo RatingThe system will always prioritize finding an opponent within a 50-trophy rangeAccount StrengthSecondary Priority The Esports Standard
By artificially capping all card levels to a specific number, the algorithm can rely purely on the Elo rating.

Trust the math, ignore the conspiracy theories, and focus on improving your own gameplay.