The holographic Charizard card became the most popular for a variety of cultural reasons at the time
Yes, it's overpriced for the first one, but controlling From the Rubble for two turns is worth it if you've built your deck around a short list of creature types
We'd long since moved away from "Summon" cards, so instead of "Summon Legend," the Legends of old were errated with subtypes and started to look like this: Legendary Creature -- Human Knight Marton got two subtypes - Human and Knight - and the Supertype "Legendary." That Supertype replaced the Creature Type "Legend" starting in the Kamigawa block
Regardless, these enchantments are all relatively easy to trigger for green, since it cares about big creatures, are cheap to buy, and require a moderate investment of mana
Given these odds, a full 80 percent or so of rares will be in Collector Boosters last slot
Four cards done up in classic monster movie style