Kokusho is the most famous of the five legendary Dragon Spirits, and its effect scales up well for multiplayer games, too, while the same can't always be said for its counterparts in other colors
With a focus on exploration and adventure, thanks to the aforementioned Locations and the inclusion of characters from 90s shows such as Duck Tales and Talespin, Into the Inklands is really going above and beyond to expand the Lorcana universe
Since we don't have any blockers, this means that Sleeper Agent actually says we take three damage a turn (from being attacked) while our opponent takes two
While this is not quite the power level of Skullclamp it does have the added perks of doing stuff on its own and not needing extra mana investments to keep it operational
Functional reprints, especially of core cards like these, are of huge value to cube players who stick to playing singleton