In modern Magic and especially in the current Standard cycle, there are plenty of commons that might be even more suited for your deck than the most expensive mythic rares out there
In the recent weekly MTG Arena Announcements post, Wizards explained their reasoning for this decision
According to the Shroud MTG rules, it interacts with other game mechanics in several ways
The card graded at a 'Near Mint/Mint+' 8.5 by CGC was autographed directly by Rush - unlike the signed protective cases of the previous record-setting cards - and featured a blank card back in keeping with the 'whiteback' artist proofs provided to MTG illustrators
You might have a card that's extremely expensive in pristine condition, but if you left it under a couch for years and it's folded in half and dog-eared that value will begin to drop rapidly
Contentious Plan + Experimental Augury Contentious Plan and Experimental Augury are proliferating cantrips, both for 2 mana