It isnt a mechanic that does anything on its own, but if you have Lessons in your sideboard, you can get them during the game using any card that says Learn. In other words, when you have a card that has a Learn effect, you get to look at your sideboard and select any card that has the Lesson subtype
Neon Dynasty takes the plane of samurai, spirits and dragons, and moves into an age with giant mechs and a world trying to harness the power of the great spirit trees they used to revere
Market research showed that hybrid mana was the highest-rated thing in the original Ravnica block, and I believe it is still one of the highest-rated "mechanics" (it's a tool, not a mechanic, but that's what the market research called it), if not the highest, of all time
With Yuriko, the Tiger's Shadow , your whole deal is striking with low-cost, evasive creatures, then launching your commander into play with ninjitsu, and reaping the rewards: plenty of card draw, and plenty of pain
"MTG Arena Announcements October 28, 2024"
Only 13 of those cards would make it into any kind of real first draft of the deck
