[2020] Historic Event ICR - included sets?

Historic ICRs come from cards that can be opened packs of sets that are not Standard legal. Currently that is:

• Ixalan
• Rivals of Ixalan
• Dominaria
• Core Set 2019
• Guilds of Ravnica
• Ravnica Allegiance
• War of the Spark
• Core Set 2020
• Amonkhet Remastered

Cards that are banned or suspended in Historic are excluded from ICRs.