I wasnt playing during Odyssey or Time Spiral blocks, so I missed out on the utter absurdity of how it used to work (where apparently the rules once let you play a land in between discarding and casting a card with Madness)
On the topic of this colorful card, the black version is only printed in Japanese, yet available in all languages of collector boosters
Not only does it make cards scarce for TCG players, but several cards from the Scarlet & Violet era are astronomically expensive
Start from the 100-card total, subtract your single commander, then fill the 99 using the ratio above: lands first (36-38), then the ramp, draw, and removal cores (roughly 10/9/9), then 7-10 win conditions, and the rest as synergy and flex slots
As Rosewater noted back in June, the mechanic is surprisingly popular among players
[205] NoA and 4Kids proceeded to plan "an all-out effort to repeat the phenomenon in the Western world"