Snorlax is the 18th most played Expanded deck right now, at 1.7% of the field across 5 tournaments in the last 3 days. Its 2 tournament lists average a 81.9% win rate, and it has won at least one event in that time. 32 core cards show up in at least 70% of lists, including Rotom V, Psyduck and Mimikyu.
Appear in 70%+ of decklists, so they are near-essential for the archetype
Not enough data for matchup analysis
Public decks built around this archetype