Choose a legendary creature as your commander
Build a 100-card deck around that commander
Use only cards within your commander’s color identity
Start with 40 life in multiplayer or 30 life in 1v1 if your group uses that rule
Put your commander in the command zone before the game starts
Draw an opening hand of seven cards
Take turns in clockwise order
On your turn, untap, upkeep, draw, main phase, combat, second main phase, and end step
Play one land per turn
Cast spells by paying their mana costs
Attack opponents with creatures during combat
Reduce opponents’ life totals to 0 to eliminate them
Win by being the last player remaining
Cast your commander from the command zone
Pay an additional 2 generic mana each time you cast your commander from the command zone after the first time
Return your commander to the command zone instead of the graveyard, hand, exile, or library if you choose
Follow the ban list and other table rules
Resolve effects and priority in turn order
Use commander damage if your group plays with that rule
Track commander tax each time your commander is recast
Shuffle your deck whenever instructed
Keep the game state clear and visible to all players