If such an effect refers to the found cards, it can't see them in exile
When a Masters set has a high expected value, it's a lot easier to justify spending $45 on a booster draft or $200 on a booster box because even though the up-front cost is high, you know that you'll get some of that money back in the form of cards you can use to build decks or, if you don't get the specific cards you need, trade or sell to get the cards you do need for your decks
With implanting new cards being the priority, this format has often taken a back seat
Y'shtola Rhul Our final card, mythic and EOT Commander or other dork copier is here
CoCo EDH Elder Dragon Highlander, renamed Commander by Wizards of the Coast
There are four main rarities (common, uncommon, rare, and mythic rare) and each one has different needs when it comes to design