9. Casual Variants

Rules overview

The Commander section is here. So is everything else WotC defines as a casual variant: Planechase, Vanguard, Archenemy and Conspiracy Draft, plus Brawl and Commander Draft as options inside Commander.

For our table, 903 Commander is the headline. Color identity, deck construction, commander tax, returning to the command zone, and 21-point commander damage all live in 903.x; partner pairs are keyword abilities in 702.124.

What you'll find

• 900 General -- optional rules for casual variants.
• 901 Planechase.
• 902 Vanguard.
• 903 Commander <-- the section we care about most.
• 903.4 Color identity.
• 903.5 Deck construction: exactly 100 cards, one of each, inside the commander's color identity.
• 903.8 Commander tax (the "{2} more for each previous time" cost).
• 903.9 Returning to the command zone.
• 903.10a Commander damage.
• 903.12 Brawl: 60-card decks, usually from Standard cards, and a commander that can be a planeswalker.
• 903.13 Commander Draft.
• 904 Archenemy.
• 905 Conspiracy Draft.

Two-Headed Giant is a multiplayer variant, so it's in section 8 (810).