It is the mace with a fire damage shield and an ice damage glaive
I hope there's no problem with sending 2 weapons, and I really wanted to send all 3, but I couldn't think of how to design the electric damage cannon with this aesthetic.
My idea is a style for all weapons inspired by cartograms of ruins with lots of vegetation, and each weapon has a story similar to this: "A very strange formation where a tree begins to grow over a gem of primal power (fire, ice, or electricity), and thanks to the power of the cartogram and the hopes of those who decide to risk exploring it, a powerful weapon is formed over hundreds of years."
I imagine something like this scene: "You defeat a boss and you arrive at a room where you see a majestic tree with a spiral formation. In the center, you see a glaive, and for some reason, you feel it calling to you. When you grab it, you see the leaves of the tree begin to fall and the trunk begins to crumble, but at the same time, you feel a great power running through your entire being."
The glaive is in the center of the spiral