It fits like a second skin. There's a sense of protection, inherent like the feeling of safety from the heart candies, but it feels somehow incomplete. Maybe it wants that transcendently ugly helmet? She could always make a lead pickaxe for now...

That is shockingly cozy, and if she keeps the helmet off she shouldn't suffer any ill effects other than possibly fewer prophecies. Maybe she can wear it when she's mining or star-catching or otherwise looking for fights and leave it off the rest of the time--how fast can she get it on and off?

More or less instantly!

There seems to be another option, now that she's actually wearing it, to designate a "vanity item" like Eric said. Her dress for the armor, her pants for the greaves.

Oh, she can use her magical girl clothes as a vanity item? If that fixes the color clash, she can just go around armored all the time. Convenient! She'll take the lead pickaxe, too, if it's better than the previous one.

The armor vanishes when she designates vanity items, though she can still feel it protecting her.

With the helmet she can feel the full effect snap into place. The armor is more protective with full coverage, even though it doesn't visibly exist, and she feels like she could mine faster. The lead pickaxe helps with that too.

Awesome! Invisible armor is the best kind of armor. Time to see how fast she can mine now!

Pretty fast! Mining before was pretty effortful, but now it's... still effortful, there are definitely still upgrades she could make, but it's a lot easier, especially when she's just cutting through dirt and stone.

"Wow, this is easier. Still hard, but hey, gotta stay fit. Assuming staying fit is even a thing with the weird physics here." She's sort of talking to Eric, except for how Eric isn't in this mine.

Eric, not being in the mine, does not respond. She finds a small cavern full of diamonds.

...There's a feeling like something is watching her. Also, her dangersense is going crazy.

Magic staff in one hand, sword in the other, blink into starscape and thicken up her scales under the armor since there's no room to fly in here, start backing up the tunnel unless the danger is coming from behind her.

The danger seems to be coming from above, even though the tunnel ceiling is just above her head.

Then the danger is either some animal that can burrow through rock, or an imminent earthquake (planetquake?), and either way a tunnel is the worst place to be. She mirror-teleports back to her house, then heads outside in case it's the second thing.

It’s a relatively peaceful night. A couple of zombies groan in the distance, a few eyeballs fly overhead. 

One of the eyeballs seems to be getting bigger. No, it’s just coming closer... and closer...

It’s a flying eyeball the size of a Mack truck, and it’s ready for a fight. 

Margaret takes to the air to give it one. "You!" staff blast "Should not!" staff blast "Exist!" staff blast  "This universe" staff blast "needs" staff blast "to get over" staff blast "its eyeball obsession!" staff blast staff blast staff blast.

It charges through the air towards her. It’s pretty fast, and really big; someone who didn’t have foresight might have a tough time dodging it. 

Margaret knows what it's going to do several seconds in advance of the doing, and she made herself lighter again when she took off; it would have to be really zippy or have a good ranged attack to connect. The question is, are her attacks doing anything other than making it madder?

There’s a few spots where a particularly good shot has pierced the membrane of its skin and it’s leaking rapidly evaporating aqueous or possibly vitreous humor! It’s got a lot of humors to go, though, and she’s only got so much mana to shoot with before she has to recharge. 

The next time she has to recharge, she gets altitude and dive-bombs it, swooping down and slashing at it with the sword.

God, it’s such a shitty sword. It scratches the cornea slightly anyway.

After a few more rounds of this the giant eyeball is looking significantly the worse for wear. It stops moving, just hovering in midair and spinning around faster and faster as its cornea begins to disintegrate.

It’s not dying, though. Dangersense says it’s getting more dangerous.

When the sword demonstrates its awfulness, she tries a handful of foot-long razor-sharp titanium claws during the next recharge.

When it starts getting more dangerous, she opens the range a bit farther and starts jinking unpredictably between shots in case it's about to sprout laser guns or something. "Guess I should have joined the Paladins after all, then I'd be totally used to this!" she yells. 

The claws work very well! 

Once the cornea is gone entirely, the eye reveals its upgrade: there's two rows of awful, foot-long teeth where the cornea was, gnashing and flicking spittle (or possibly more aqueous humor) everywhere. It charges at her, noticeably quicker but not enough so to actually catch her.

"HOW did you manage to get EVEN MORE DISGUSTING?!" blast blast blast blast claws blast blast, circling a lot to send some shots into the mouth and others into the back and trying to judge which side is more vulnerable. The melee attacks while she reloads are of course all aimed as far away from the teeth as possible.

The inside of the mouth is pretty vulnerable! It's not much longer until she fires off a blast that punches right through the back of it and the whole thing detonates in a shower of clear jelly and blood.

It drops three gold coins, a handful of strange red seeds, and a stacked lump of that red-and-black ore she found the other day.

Some of the jelly and blood gets on her; it doesn't vanish fast enough for her liking, so she deletes the outer layer of her shirt and skirt and puts them back minus the filth. The loot gets collected once it's definitely for sure clear of goo, and even then she holds the coins in a fire before putting them in her bag and keeps the rest on the ground near her door pending figuring out what they are. Then she sits at her workbench and lets the exhaustion of the fight catch up with her for a while.

The new ore turns out to be called "Crimtane". With Crimtane bars, she can make a sword, an axe, a bow, a... fishing rod? and... a yo-yo????

"More advanced Crimtane equipment requires Tissue Samples from the Brain of Cthulhu," Eric informs her. "Now that you have defeated the Eye of Cthulhu, I know a Dryad who might want to move into town!"