Lorcana Meta Calculator

This is a Monte Carlo simulation — it runs your tournament hundreds or thousands of times and reports how often each deck wins or reaches the top cut.

1. Deck assignment — players are assigned decks proportionally to the meta percentages you enter. A 32-player tournament with Ruby/Sapphire at 25% gets ~8 Ruby/Sapphire players.
2. Swiss pairing — each round pairs players with the same match record, avoiding rematches where possible. An odd player out receives a bye (free win).
3. Matchup-driven outcomes — each match is decided using the win rate from the source data. If Deck A beats Deck B 62% of the time, A wins that pairing 62% of the time. Mirrors default to 50/50. Matchups with no data default to 50/50.
4. Tiebreakers — after Swiss, ties are broken by Opponent Match Win % → Game Win % → Opponent Game Win %, identical to official tournament rules.
5. Top cut — the top N players enter single elimination. Each match is again resolved using matchup win rates.
6. Results — the bar chart shows each deck's average tournament wins (won the whole event) or top cut appearances across all simulated runs. Higher = better expected performance in this meta.

Tip: click Import from Calculator to pre-fill the deck field with the observed meta % from your current data source.