Quote from FlossedBeaver »And what do you mean by 'regular rules'? As far as I know, all rules are regular rules.
If you read the comprehensive rules, I think, they refer to the rules "used in traditional Magic games".
Quote from9. Casual Variants
900.1. This section contains additional optional rules that can be used for certain casual game variants. It is by no means comprehensive.
900.2. The casual variants detailed here use supplemental zones, rules, cards, and other game implements not used in traditional Magic games.
Commander in particular is described as a "variant". I would have assumed that in casual conversation "regular rules" is an acceptable way to communicate the core rules without variants. What do you think?