Validate your Magic: The Gathering decks for the Cat Fighting format
1v1 format with 9 starting life. Noncombat damage from opponents is prevented.
40 card singleton minimum, plus 9 card sideboard maximum.
Only lands and non-creature spells with CMC exactly 1. No 0 CMC cards, no Dryad Arbor.
Each player starts with Nine-Lives Familiar (8 revival counters). Not part of your 40 cards.
Fetching deck data and validating cards...