This is a bad mana rock that is way too slow at making Clues
A Grand Master Set goes beyond that to everything printed around the expansion: promotional and stamped variants (prerelease, staff, retailer exclusives), separate print runs (1st Edition, Shadowless), and known error cards
We get excellent artifact destruction in cards like Shatter, Detonate, and Shatterstorm (and even an artifact counterspell in Artifact Blast)
Thoughtcast Rating: 4/10 Youll have to get beyond Divination rates for Thoughtcast to impress
Some rebacked cards are made when the back of the card was considered marked or unplayable, and someone put the front on a new back to allow the card to be "playable" again
Ive seen plenty of games where Elspeth resolved on an empty board, made three tokens, and slowly buried the table under Soldier swarms