I recommend checking out ThrabenU s video on the topic for all the interactions and exciting opportunities this rule change enables
A 1st Edition card can be distinguished from an unlimited card by a small circular black stamp on the left (that says "Edition 1") below the character box on the front
They also read, Whenever you discard one or more cards for the first time each turn, draw that many cards. Now, this obviously works really well with wheels, but it also just works well when youre discarding cards to draw cards or to trigger other effects
It contributes to the board deadlock while becoming a finisher, and since there are not many creatures larger than itself and there is little definitive removal, you can properly bring it to a size battle
The deck has cards that help you quickly get Suicune ex on the field and fill your bench so its doing maximum damage
A fitting parallel with Crucible of Worlds