For milling your opponents, EDH has better options: Soaring Thought-Thief, Consuming Aberration, Breach the Multiverse are examples of significantly more efficient mill than most rad counter effects
Commander is the format that embraces something other than the objectively best deckwe wrap our arms around every theme, whether that theme is tribal, the initials of your significant other, or the deck based on a favorite piece of literature, like Lark Ballingers Battle of Arrakeen
Oreskos Explorer : Allows you to search for a number of Plains equal to the number of opponents who control more lands than you and put them into your hand
The Lord of the Rings: Tales of Middle-earth Set Review - Green (Legolas, Master ArcherLegolas, Master Archer | Campbell White) White | Blue | Black | Red | Green | Artifacts & Lands | Allied Colors and Shards | Enemy Colors and Wedges | cEDH | Reprints I Eat Punks Like You For Second Breakfast Hello, everyone
Those two cards may be found together in Grixis-colored builds, such as Grixis Delver in Modern
The problem is that Set Boosters are not designed for Limited play