These effects are particularly popular in decks with many small creatures, like Edric, Spymaster of Trest, Anowon, the Ruin Thief, and Tetsuko Umezawa, Fugitive
Despite its past, Mishras Workshop is popular among collectors and longtime MTG players
Card not found is quite reminiscent of Card not found from Ice Age, but with minor tweaks
Shantotto, Tactician Magician A limited focused card for the UR cast big spells archetype which seems like a perfectly decent little dude, who also loves affinity for artifacts
I also see a lot of unsuccessful decks that lose because they just dont know what theyre doing theyre a random mix of cards along a mana curve rather than something like looks like a cohesive deck
One last fun addition is the new regular Ceruledge card