Sealed Product Let's say that you don't need every single version of every single Magic card printed in 2020, but you do want to experience at least some of every product printed in 2020
Pay the four generic and one white to cast and resolve Reveillark, and then immediately sacrifice it to Phyrexian Altar to produce one mana of any colour
This frees up some slots to give you access to another benefit from blue: counterspells
The card is sweet but easily dealt with so I didn't want to put a full playset, but it is has enough upside to where I'd throw a few copies in
Green-based Pernicious Deed decks are tricky because the card is mana intensive and the best way for green to accelerate mana is through low cost creatures like Birds of Paradise or Llanowar Elves, which Deed wipes out
Legacy and Vintage had similar problems with homogenisation, but even worse, as both formats are all about cheap and efficient cards