I'm bored, so I have two.
Name: Sui-Riu
Release command: "Soar"
Hand-guard: A profile of an open dragon mouth
Hilt: Orange
Shikai: It is a thin, somewhat long sword, with a dragon etching on the blade. The hilt is a dragon's head, with the blade extending from the dragon's open mouth, as if the blade was its fire. The bottom of the hilt possesses a dragon fang.
Abilities: The etching of the dragon on Sui-Riu's blade glows, and then expands. The blade will take the shape of an oriental dragon when the etching breaks the barrier of the blade. The Dragon can then lengthen from the hilt and be controlled mentally. Despite its shape and flexibility, the dragon remains as flat, sharp, hard and strong as metal. The dragon can also launch flames from it's mouth.
Bankai: A total of ten dragons, as in the shikai, that can be controlled independently, or combined into 1 metal dragon (form of a dragon, not just a flat design) that can also shoot large metal spires from its mouth.
Wielder: Renji, I guess, since this is similar to his.
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Name: Phantasmagoria
Release command: "Multiply and Destroy"
Hand-guard: A ring that isn't attached to the hilt physically (I. e., it looks like it's floating)
Hilt: Blue
Shikai: It is a 7ft. long, double-edged sword, mostly black, with blue edges.
Abilities: The main ability of Phantasmagoria, is to create extra blades of the sword. By default, Phantasmagoria always has one Phantasm (known as the Primary Phantasm), which costs no reiatsu to maintain. The Phantasm is a replica of the blade of Phantasmagoria, but located exactly one foot away from the blade, and containing no hilt, merely floating in place. The Phantasm can appear on either the left or right side of the blade, but always stays on the plane of the blade. There is no reiatsu cost to switch which side the Primary Phantasm is located. A Phantasm has one main effect, which is to greatly enhance the force of a sword swing. The way this works, is when the sword is swung, the Phantasm would hit the target first (if it's on the same side of the sword, of course). The force holding the Phantasm a foot away from the blade is quite weak, so the blade itself would keep moving towards the object while the Phantasm is held against it, decreasing the distance between the blade and the Phantasm (unless the target was weak enough that the Phantasm cut through it). When the Phantasm and the blade make contact, they will instantly merge, and for a split second, the force that was used in the sword swing to get them to combine will be multiplied by five, and exerted into the sword swing at the target (I.e., it will be as if the sword was swung with five times the force it actually was swung at). While the Primary Phantasm is free of chakra cost, Ixero can create as many Phantasms as he wishes, but each comes with a reiatsu cost. Each additional Phantasm (known collectively as the Phantasmagory) must be one foot away from the previous, but on either side of the blade. Phantasms can merge in the same way that one can combine with the blade, but the force increase will not happen until the real blade merges with the Phantasm. The force increase from a multiple combination is not continually multiplied by 5, it's just the addition of another 5 times force (I.e., if the sword swing has a force of 10, it does not increase to 50 and then 250 and then 1250, etc., it increases to 50 and then 100 and then 150, etc.). Once a Phantasm merges, it cannot unmerge from the blade or other Phantasms.
Bankai: Innumerable Phantasms appear floating all throughout the battlefield, able to be collected for use. Also, their multiplier increases from 5 to 20.
Wielder: Komamura, since his massive strength compliments it well