Superman's Mjolnir
As big a fan as I am of DC, it would be stupid to limit my thoughts of advancement and
development strictly to the DC Universe.
Marvel and DC often ripped each other off.
Here's a list of characters Marvel ripped off DC (with the ripped off characters listed in parentheses): Deadpool (Deathstroke - name, outfit, assassin job - and Ambush Bug, Batmite, Mr. Mxy - 4th Wall Breaking), Doctor Strange (Doctor Fate), Nova Corps (Green Lantern Corps), Black Cat (Catwoman), Thanos (Darkseid), Sentry/Hyperion/Gladiator/Many Other Similar Characters (Superman), Hawkeye (Green Arrow), Bullseye (Deadshot), X-Men (Doom Patrol), Squadron Supreme (Justice League), Thunderbolts (Suicide Squad), Ant-Man (The Atom), Vision (Red Tornado/Martian Manhunter), Quicksilver (The Flash), Black Lightning (Electro), Magneto (Dr. Polaris), The Hulk (Grundy), Moon Knight (Batman), Mr. Fantastic (Plastic Man/Elongated Man), Ultron (Brainiac), Jarvis (Alfred), Banshee (Black Canary), Captain Marvel (Shazam!), Mockingbird (Black Canary), Tigra (Cheetah), Bullseye (Deadshot).
Here's a list of characters DC ripped off Marvel (with the ripped off characters listed in parentheses): Commander Steel (Captain America), Zatanna (Scarlet Witch), Imperiex (Galactus), Red Lion (Black Panther), Black Racer (Silver Surfer), Rocket Red (Iron Man), Swamp Thing (Man-Thing), Guardian (Captain America), Aquaman (Namor), Bumblebee (The Wasp), Dr. Dread (Dr. Doom), The Terrifics (Fantastic Four), Lobo (Wolverine), Steel (Iron Man), Atomic Skull (Ghost Rider), Killer Croc (The Lizard), Red Hood (Winter Soldier's circumstances), Dr. Ikon/Ikonic (The Hulk), Viking (Thor), Black Spider (Spider-Man).
Considering how often Marvel has stolen from DC (and vice versa), I feel comfortable stealing from Marvel to improve my powerset and conditions. Through my studies and analysis while researching outer space materials suitable for mining, I've come across the famous white dwarf star alloy.
In the comics, Superman crafted a key to his fortress out of white dwarf star alloy. The condensed version of the alloy was so heavy, it weighed approximately 500 thousand kilograms (approximately 550 metric tons). The version I'm thinking of was the size of a regular key (not the ridiculous key the size of a semi truck). A similar material has also been referred to as Supermanium. So with that in mind I crafted a weapon tailor-made for my Kryptonian/Herculean (via Shazam powers) abilities: a Mjolnir ripoff.
Through my experiments, I've constructed a replica of Mjolnir using a dwarf star alloy. Through my studies at the Rock of Eternity, I've managed to craft a system of runes throughout the hammer (it looks identical to Mjolnir). The runes have bonded the weapon to me alone so there is no "worthiness" test; the hammer recognizes my soul just in case they manage to replicate my magic signature. Through the runes, I can channel my magic to control the weight of the hammer. The full weight of the hammer is massive. Just dropping the hammer onto a building, an attacking spaceship, or any other structure is enough to make a hole through anything through its weight alone.
It's different from Mjolnir in that regard. Mjolnir wasn't really that heavy since many weapons are crafted in Uru (what Marvel's Mjolnir is made from) and many people can lift Uru weapons without much problem. What makes Mjolnir most special in my opinion is that it can't be lifted by anybody else who isn't "worthy" - which makes it a very short list of people who can lift the hammer. I've circumvented that quality of Thor's Mjolnir, by making my hammer impossibly heavy (many millions of metric tons) and a check for my soul signature. That way, no one can use the weapon against me.
I've created a magical/psionic/soul link with the hammer so it not only responds to me, but I can recall the hammer after throwing it. I can summon the hammer by dragging it physically (flying through space like Thor's hammer) to myself, or I can teleport the hammer directly to me. It's more versatile to have it be able to be summoned in both ways. If I want to rely on smashing things in different ways, I can summon the hammer like Thor does and have it smash into things while it's traveling to me. Or if I have need of the hammer immediately, I can just skip the traveling time by having it teleport to me.
When the hammer is not needed, I have a special altar created near my throne in the Rock of Eternity for the hammer to rest. With runes on the altar, I've used them to empower the hammer with magic in an attempt to create a sentience over time. With enough time, I hope to have the hammer have a form of intelligence to make it easier to wield. Currently, I can use my magic to handle the hammer like another limb, but I hope to make it almost like a symbiote in how easy it will be. Another example of sentient objects would be Dr. Strange's Cloak of Levitation - it can attack people on its own and rescue him when he's in trouble. I'd like my hammer to be able to do so, but I'm not quite there yet. In my magical studies, I've found that through repeated use by connecting it to its own power source, through imbuing it with my magic, my thoughts, and connecting with my soul enough times, the hammer can acquire these qualities on its own given enough time. If I enchant it specifically to have sentience, I'm worried it might end up being too dumb for what I want it to do. I hope to have it acquire its own sentience. I'm worried it might take too long though. If it takes several years, I might just end up enchanting it with sentience. But I can wait awhile.
My Mjolnir is nearly indestructible. With self-healing, indestructible, strengthening, as well as other runes, the hammer will repair itself if it's ever destroyed like Hela managed to do to Thor's Mjolnir. The self-repair is enabled through various runes which include runes specific to mending the materials of the hammer, but in the event of complete imminent destruction, the rune scheme for time reversal charms go into effect, reversing the damage from the destruction. So there are multiple contingencies in place to ensure the hammer is never destroyed.
The runes cannot be manipulated via another magician. When using magic and other means to craft runes or update my existing runes, it checks for my soul's presence and checks the intent of the person making the changes. If the person has wrong intentions (wants to disable the features protecting the hammer), it will reverse the changes through either the self-mending/self-repair rune schemes or through the use of the time reversal runes to revert the hammer back to its unaltered state. This way, if someone tried to magically alter the runes for self-repair and self-mending, the time reversal runes would go into effect. Theoretically, they'd have to try to modify both rune schemes at the same time. But who would know to do all that? Plus, it checks for my soul's presence AND the intentions of the person modifying it. If they can fake my soul's presence, modify multiple rune schemes simultaneously, and manage to bypass the intent wards, I will honestly congratulate the person ingenious enough to do so.
In Marvel Comics continuity, Thor's Mjolnir had the God Tempest in his hammer which allowed him to channel his thunder and lightning separate from any use of his godly divinity. Since I have the powers of Zeus, I can easily control the weather and more specifically control the "living lightning." I can do this independently of my Mjolnir ripoff, but I've engraved a rune scheme for weather manipulation, lightning manipulation, and other effects so I can use those powers when I'm not in Shazam mode. I'm trying to cover all of my bases. What if I use a "Shazam!" lightning bolt on an enemy and they somehow dodge it, reverting me from my Shazam form while I'm trying to wield my hammer? Those are precious seconds I could waste while I'm waiting for another "Shazam!" lightning bolt to transform me into my Shazam form.
With the hammer, I can independently use its power source for lightning and controlling the weather. Theoretically, combined with the powers of Zeus, it's even easier to channel my powers through it via the concept of using it as a focus.
Through an additional rune scheme, I've also created the hammer as a source to trigger my "Shazam!" transformation. With the link I've created, I can trigger the transformation using the hammer as a focus as long as I concentrate on envisioning the transformation taking place (desire to change) and internally shouting "Shazam!" it does not need to be verbal.
This gets around many of the potential weaknesses of verbalizing "Shazam!". What if I'm in outer space and don't have an air supply or enough of a pocket of air to verbalize "Shazam!"? Will I still transform? If someone somehow covers my mouth or magically removes my ability to speak, would I be able to transform nonverbally? Not likely. This removes that limitation.
Granted, I don't really need the Shazam form to be a formidable threat, but I'd prefer to keep them active at all times as the increases to my speed, stamina, strength, magical resistance (my favorite part which nullifies my vulnerability to magic), and all other qualities are amped by my transformation. Not to mention, if my Superman suit gets damaged, a quick detransformation then transformation will refresh the suit I'm wearing. I don't have to worry about fighting naked or rushing to the Fortress or elsewhere to get a backup costume. There are just so many advantages to having the powers of Shazam, I'm sure you don't want me to continue my rant.
I've decided to stick with the name of Mjolnir for my hammer. I'm probably tempting the Gods by doing so. What if there is a Mjolnir in this universe? I don't think there is a direct "Thor" in this universe, but I think there is a similar equivalent. But is the mythological weapon in existence in the DC Universe? Would naming my hammer Mjolnir anger someone or would it cause the hammer to take on undesired qualities? I'm just going to roll with it for now since it's an homage. Maybe any entity who has a "Mjolnir" will feel honored by my tribute.
In conclusion, I've covered the weight of the weapon, the near indestructible nature of the hammer through self-repair/self-mending/time reversal/intent ward, making it only usable by myself through soul verification, used lightning and weather rune schemes so it has those powers when I'm not in Shazam form and enhances those powers when I'm in Shazam form, made it summonable through physical space and teleportation, crafted an altar for storage when not in use, enabled the ability of transforming into my Shazam state using the hammer nonverbally, and I'm working on making my version of Mjolnir sentient.
Is there anything I haven't covered?