The matchmaking algorithm is the unsung hero that determines exactly who you will face every time you press the 'Battle' button.

While this conspiracy theory is widespread, the reality is much more mundane and focused entirely on mathematical fairness.
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.
Understand that a 50% win rate is normal.Queue times increase at the top of the ladder.Losing streaks are also self-correcting. 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.

However, if no such player is available, the algorithm will prioritize queue speed over level fairness, resulting in those frustrating, mismatched games.
Community MythThe TruthForced Loss StreaksThe algorithm does not force losses; you are simply playing tilted against harder opponents because your MMR is inflatedAnti-Strategy CodeDevelopers have confirmed repeatedly that the algorithm does not read the contents of your deck when finding an opponent Maintaining Competitive Integrity
This is why all true esports tournaments and competitive challenges utilize the 'Tournament Standard' ruleset.

The algorithm is blind; it only respects victory.