Since everyone needs at least one creature out to keep Sothera around, youre encouraged to use it more as a grindy value tool than a continuous board wipe
Thats the most aggressive way to get value from your Evercoat Ursine, if youre only looking to use it once
Homelands , the very next set, had four (Headstone, Jinx, Prophecy and Renewal) all done with the same wait-until-next-turn text
This is the very crux of rule zero and the pre-game discussion
How Collecting Pokmon Cards Has Changed Initially, it didn't seem like Pokmon cards were all that hard to find
Card Set(s) -ADVENTURE ON KAMI'S ISLAND- [OP15-EB04] CARD VIEW EB04-001 | L | LEADER Jewelry Bonney Attribute Special Block icon 4 Type Egghead/Bonney Pirates Effect [Opponent's Turn] If you have 1 or less Life cards, this Leader gains +2000 power