These add redundancy for known powerful effects and typically come together as a powerful known quantity, like a Talrand, Sky Summoner deck, but with black and team pump in the command zone
Unlike 1mv dorks, which are mostly interchangeable, the playability of 2mv dorks usually depends on which specific cards synergize with your decks strategy
Kappa Cannoneer Kappa Cannoneer is a card that already sees play in legacy
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
While I would almost never recommend this approach for older booster boxes, as you are gambling heavily on opening a chase card in an environment where the odds are stacked against you, sometimes this approach works well with newer sets
I mean Preordain is banned in Historic for a reason