Rule evolution
Rule 903.4f
Previously numbered 903.4e.
Earliest archived Rules release: 2020-11-20 · 0 wording revisions · 1 renumbering
Added903.4eDetails
If an ability refers to the colors or number of colors in a commander’s color identity, that quality is undefined if that player doesn’t have a commander. That part of the ability won’t do anything. Costs that refer to that quality are unpayable.
Renumbered
903.4e→ 903.4fDetailsPreviously
9. Casual Variants
903. CommanderThen
9. Casual Variants
903. CommanderIf an ability refers to the colors or number of colors in a commander’s color identity, that quality is undefined if that player doesn’t have a commander. That part of the ability won’t do anything. Costs that refer to that quality are unpayable.