Sword of Channeling

The Sword of Channeling was a mysterious weapon most known for its capability to capture and unleash energy or elemental power.

History
Exactly 98,732 years ago, the sword was unearthed by a Toa who would later become a member of the Toa Cordak. The sword was guarded by a fearsome Rahi, which it's first possessor defeated to claim the sword. When the Toa Cordak were obliterated by Zyglak, the sword was left on the Toa's corpse until it was looted by a Matoran scavenger, who eventually saw its arrival into a city on the Northern Continent.

After this, it was claimed by a well-off Toa of Plasma, who liked its fancy looks and thought it'd be a nice addition to his collection of rare artifacts. However, this Toa was mugged by another Toa before it could be used. The sword spend roughly 56,000 missing in the history of the Matoran Universe, although it is known that the Toa who stole it did use it for this time, becoming her primary weapon.

Around 33,000 years ago, it was taken by Valtahl in a ferocious conflict. It has remained in his possession since.

Functionality
The sword has the ability to trap energy of various kinds all along its blade and handle. The user can use it to capture attacks against them, or they can charge it with their own energy. The sword could also capture items like Kanoka disks and utilize their respective powers.

The sword was made out of an alloy of Protosteel and another unknown material, likely around the time the Matoran Universe was under construction. The composition of the blade let it break through extremely strong materials under the right amount of force, although it could not break Protosteel.

The sword also had an ability to change it's form based on the being who was wielding it, with it remaining in one form until used by another. The shape of the weapon was determined by personality, experiences, and fighting style, so the form could change if a being were to undergo memory loss. This unique ability has caused its depiction to vary greatly, and Matoran scholars have not been able to identify its default form.

Additionally, the three Gems always seen on the Sword can be interpreted to glean the state of the Matoran universe, based on their color and brightness, and each color's relation to the others. A more cloudy, glassy, or non-unified look would indicate something wrong, while clear, solid, and similar colors would indicate stability.