cuz i never run Meta deck 4ever, its spoiled me, lol
There are some exceptions, but this is the limit that Yugioh players generally follow
Meteor Golem Spine of Ish-Sah, but can't target lands (why???), doesn't have a neat built-in recursion trigger, buuuut it's a creature so that opens up more synergies
For example, if youre building Pauper Elves, youre going to need four copies of both Quirion Ranger and Timberwatch Elf
The Reserved List solved an existential crisis back in 1996, but because it promised that the cards on the list would " never " be reprinted (and because Wizards has mostly kept this promise for 25 years), it has ended up causing problems in the decades since as we are stuck with a supply of Gaea's Cradles, Underground Seas, and Lion's Eye Diamonds befitting a game with hundreds of thousands of players for a game that now has 20 million