History of CR 903.5b

Every distinct wording since 2010, newest first.

April 29, 2022 · Streets of New Capenna
Other than basic lands, each card in a Commander deck must have a different English name. For the purposes of deck construction, cards with interchangeable names have the same English name (see rule 201.3).
February 4, 2011 · Mirrodin Besieged
Other than basic lands, each card in a Commander deck must have a different English name.
February 1, 2010 · Worldwake
rule 903.5b not present in this release