Consulting the ledger
The record
Every ban and set release that moved the format. These mark the boundaries between metagames — read any window against the change that opened it.
Edge of Eternities released (Standard rotation)
Cori-Steel Cutter BANNED, Abuelo's Awakening BANNED, Monstrous Rage BANNED, Heartfire Hero BANNED, Up the Beanstalk BANNED, Hopeless Nightmare BANNED, This Town Ain't Big Enough BANNED
Final Fantasy released
Tarkir: Dragonstorm released
Aetherdrift released
Duskmourn: House of Horror released
Bloomburrow released (Standard rotation)
Outlaws of Thunder Junction released
Murders at Karlov Manor released
The Lost Caverns of Ixalan released
Wilds of Eldraine released
Fable of the Mirror-Breaker BANNED, Invoke Despair BANNED, Reckoner Bankbuster BANNED