Yeah, Battlemage is the truth a powerful Avatar that applies simultaneous pressure and card advantage
Series 1 consisted of: Sword & Shield Base set to Evolving Skies Series 2 consisted of: Battle Styles to Brilliant Stars Series 3 consisted of: Brilliant Stars to Scarlet & Violet Base set Series 4 consisted of: Lost Origin to Obsidian Flames Each Prize Pack comprises six cards, selected from a pool of roughly 100 or more, all of which are legal in the Standard format and feature the unique Play
The Backup Mechanic Lets take a look at the Release Notes for the backup mechanic, just to keep in mind exactly how it works: If a backup ability causes another creature to gain abilities, the creature with backup will still have those abilities
Love this things unique play and goading loads
And that's all you need to know about Pokemon TCG formats
Since there were so many other Dark-type Mega Pokemon to choose from at the time, it was likely easier to just leave Sableye to its treasures