History of CR 513.1a

Every distinct wording since 2010, newest first.

May 3, 2019 · War of the Spark
Previously, abilities that triggered at the beginning of the end step were printed with the trigger condition “at end of turn.” Cards that were printed with that text have received errata in the Oracle card reference to say “at the beginning of the end step” or “at the beginning of the next end step.”
January 25, 2019 · Ravnica Allegiance
Previously, abilities that triggered at the beginning of the end step were printed with the trigger condition "at end of turn." Cards that were printed with that text have received errata in the Oracle card reference to say "at the beginning of the end step" or "at the beginning of the next end step."
September 30, 2016 · Kaladesh
Previously, abilities that triggered at the beginning of the end step were printed with the trigger condition “at end of turn.” Cards that were printed with that text have received errata in the Oracle card reference to say “at the beginning of the end step” or “at the beginning of the next end step.”
May 1, 2014 · Journey into Nyx
Previously, abilities that trigger at the beginning of the end step were printed with the trigger condition “at end of turn.” Cards that were printed with that text have received errata in the Oracle card reference to say “at the beginning of the end step” or “at the beginning of the next end step.”
September 30, 2011 · Innistrad
Previously, abilities that trigger at the beginning of the end step were printed with the trigger condition "at end of turn." Cards that were printed with that text have received errata in the Oracle card reference to say "at the beginning of the end step" or "at the beginning of the next end step."
June 17, 2011 · Commander 2011
Previously, abilities that trigger at the beginning of the end step were printed with the trigger
April 1, 2011 · Duel Decks: Knights vs. Dragons
Previously, abilities that trigger at the beginning of the end step were printed with the trigger condition "at end of turn." Cards that were printed with that text have received errata in the Oracle card reference to say "at the beginning of the end step" or "at the beginning of the next end step."
February 4, 2011 · Mirrodin Besieged
Previously, abilities that trigger at the beginning of the end step were printed with the trigger condition “at end of turn.” Cards that were printed with that text have received errata in the Oracle card reference to say “at the beginning of the end step” or “at the beginning of the next end step.”
October 1, 2010 · Scars of Mirrodin
Previously, abilities that trigger at the beginning of the end step were printed with the trigger
July 16, 2010 · Magic 2011
Previously, abilities that trigger at the beginning of the end step were printed with the trigger condition "at end of turn." Cards that were printed with that text have received errata in the Oracle card reference to say "at the beginning of the end step" or "at the beginning of the next end step."
February 1, 2010 · Worldwake
For many years, abilities that trigger at the beginning of the end step were printed with the trigger condition "at end of turn." Cards that were printed with that text have received errata in the Oracle card reference to say "at the beginning of the end step" or "at the beginning of the next end step."