While it is quite costly for a blue creature, there is a good reason why, as it returns all other nonland permanent cards to their owner's hand that were played during the turn that it is cast
2 Orvar, the All-Form Likes to Duplicate Cards and Use ETB Triggers 7,799 Decks on EDHrec.com Orvar, the all-Form is a wacky card from the Kaldheim set that likes to duplicate cards, especially creatures
If you mash these two numbers together and account for the rarity difference, the average value of opening a single box topper in a Double Masters box is $49.16, but since we get two box toppers with each box, box toppers actually add a massive $98.34 to the expected value of a Double Masters box
Like I don't know if it's burning down a whole lot of Gruul four-ofs, but I can totally see two copies in some decks, and all four in total seventy-fives
#4 I half feel like propping up Nicol Bolas/Cruel Ultimatum.dec would be an interesting asymmetric 3-colour deck incentive, rather than adding a whole bunch of 3-colour stuff
Despite that large discrepancy, Vent is a great land
