Ironically, Griselbrand almost singlehandedly drove Reanimator out of the metagame in Legacy, by making Sneak and Show so consistent that there's not much reason to go through your graveyard but, whenever graveyard hate diminishes, top players often pick up the Exhume-based combo again in order to be faster than the Sneak and Show deck
Alone, Celestine can bring back creatures three mana value or less, which is very on-theme for white reanimation
Most players know the basics, but a Mel player will take greater interest in the edge cases and footnotes of the comprehensive rules
This, combined with the wide variety of different effects that even early Warrior monsters offered, made this a great card that could be integrated into any deck that wanted to run a Warrior engine
Sometimes you don't have quite enough ammo in your graveyard to finish everyone off in a single swing
However, the corresponding JP sets that it pulled from dont mesh as well as Skyridges, so the set ends up feeling rather disjointed in a similar way that Expedition did