Over an extended sample size across multiple decks, I’ve tracked opening hands and early draws and observed a consistent deviation from expected land probabilities specifically when games are played at rank-promotion boundaries (e.g., Tier 4 → Tier 3).
This behavior appears regardless of deck archetype and does not occur when the same decks are played away from promotion thresholds.
I understand variance and RNG, but the consistency and repeatability suggest a possible unintended interaction with matchmaking, rank state, or shuffler logic.
I’m happy to provide raw data and methodology if helpful.