That's ideal for a few reasons, first, if a reanimation spell like Animate Dead was milled, you can now draw it after shuffling or Demonic Tutor
If neither I nor my opponent has a Character with a cost of 5 or more on the field, can I still activate this [Activate: Main] effect to rest 1 of my cards
The artwork presents a massive elemental entity covered in coral, emerging from the ocean's depths in an explosive emergence
It's graveyard hate against lots of decks in the format and you can even use a spell from your opponent against them like card draw or a dead planeswalker
While this isnt exactly haste since they cant attack there are plenty of abilities that benefit from this
That card went on to be reprinted again and again throughout Gen 8in total, a whopping 35 iterations of the Marnie card were issued throughout the entirety of the generation