• Oathbreaker is multiplayer format, played with 60 card singleton decks (only one copy of each card, no limit on basic lands).
  • You start the game with your Oathbreaker and Signature Spell in the command zone.
  • Your starting life is 20 .
  • Your “Oathbreaker” is a Planeswalker. Its color identity determines the contents of your deck.
  • Your “Signature Spell” must be an instant or sorcery card that falls within your Oathbreaker’s color identity.
  • You cast your Oathbreaker from your command zone.
  • Your Signature Spell may only be cast if your Oathbreaker is on the battlefield under your control.
  • Both your Oathbreaker and Signature Spell are subject to “command zone tax”. These taxes are tracked individually, i.e. casting your Oathbreaker doesn’t cause your Signature Spell to cost more.
  • To find out more, read the full rules.