Immortal Slime Magical Girl

Slimes. Slimes are dumb. The only organ a slime has is a slime core, a sphere which, if measured by a ruler, will reach less than the 1cm mark on all but the biggest slimes. This sphere functions as a slime's brain, eyes, ears, nose, and as the thing that keeps the slime together by creating some strange slime-only gravity thing that no one understands, including slimes because they're dumb. The smartest thought ever had by the smartest slime was the conceptual equivalent of "food good do me slime me do good food good me", a revolutionary upgrade from the average slime thought which is closer to "food good". They can't get smarter from leveling up because they don't even get Intelligence and/or Wisdom stats because they're so dumb the system just replaced them with Magic and Capacity stats because even if they had Intelligence and Wisdom stats they wouldn't work because slimes are so dumb that the multipliers those stats would apply would do nothing.

So when an average green slime, named Slimette by someone who decided a bunch of green slime with a sphere in it was somehow female, comes across a magical girl wand with an unfortunately worded user requirement, that also happens to be indestructible and soulbond, what will she do...?

She'll eat it. Because she's a slime. And slimes are dumb. That's what. Somehow though, the wand fused with Slimette's slime core, allowing her to transform into a human while the System still registers her as a slime, or it least it did because now she's registered as both a slimeanda magical girl wand from another world that shouldn't be here but can't be deleted by the admins because somehow the admins can't beat the power of friendship, love, happiness, and smiles which the wand is filled with.

Get ready for a fun (and gory) time (unless you're not Slimette because everyone else is going to suffer) because Slimette is gonna do... something.