Rules
Spouse Selection
You may marry any two legal commanders (or Planeswalkers! Planeswalkers! ) within the following constraints:
- The Color Rule: Commander couples' color identities may not exceed three colors.
- The Rarity Rule: At least one of the chosen spouses must be of either Common or Uncommon rarity.
Abilities that make it possible to have more than one commander in EDH are ignored. Exempli Gratia:
- Partner
- Partner With Partner With
- Choose a Background
- Friends Forever
- Companion Companion *
- Doctor's Companion
Card Legality
Cards on The Banlist are not legal.
Otherwise, SDH inherits EDH's restrictions, and adds two more:
- Cards using Attractions, Stickers, and/or Tickets are not legal in SDH.
- Because of the Color Rule, cards in more than 3 colors cannot be run in SDH.
Technically, SDH also illegalizes Contraptions and ante cards, but those cards were already banned in EDH, so there's effectively no difference.
For a more digestible version of the banlist, see the EDH banlist comparison.
Social Contract
For information about what players are expected to expect from other players, see the SDH Constitution.