From Power Rangers Universe

Hidden beneath a waterfall for untold ages, the Shield of Triumph, when infused with the power of the Blue, Yellow, White and Black, Dino Gems, would transform from a white, powerless relict to a colorful and powerful device which could then only be used by someone "in tone with the mystical dino energies" as the Black Dino Ranger Doctor Thomas Oliver put it.

Thus, the Shield was obtained by a person Oliver believed to fit the requirements, Conner McKnight, who used the shield's power, along with his own Red Dino Ranger powers, to become a completely new Other Ranger known as the Triassic Ranger. After this, Conner would sometimes require repeated power transfers from the Blue Dino Ranger Ethan James and the Yellow Dino Ranger Kira Ford. However, Conner would also, in times of extreme stress or necessity, activate his Triassic powers on his own with the shield.

After Conner morphed into the Triassic Ranger, he also often activate the shield's other abilities, seemingly as second nature.

These other abilities included: the shield's second mode, called the Sword of Triumph (which was basically just the shield with a blade bit extended, like on a Swiss Army knife), and the power to transport the Triassic Ranger and his opponent into another reality. The Triassic Ranger referred to it as his world and others commonly dubbed it "the Triassic Dimension". In the Triassic Dimension, the Triassic Ranger appeared to have complete control over reality, meaning his enemy was doomed. After their defeat, he would return with them to other world, where his enemy would often explode, somewhat spontaneously.

Finally, the shield also acted as the Triassic Ranger's control key for the Mezodon Zord, Mezodon Rover and Mezodon Megazord. The shield itself, as a whole, looked like the Mezodon Zord's head, but it was also decorated with face places of the Cephala, Parasaur, Dimetro, and Ankylo Zords, allowing it to control them as well. This effectively made those Zords the Triassic Ranger's and allowed him to form the Triceramax Megazord.