The Crimson Dragon

The Crimson Dragon's powers and abilities

As a deity, the Crimson Dragon is practically capable of doing nearly anything it wishes. It possesses the ability to freely create, control and manipulate fire, flame, and heat at will.

To keep itself safe, the Crimson Dragon shared five fractions of its immeasurable energies and entrusted each to five humans it chose (eventually six), sensing their good hearts. It also has the extremely difficult ability to influence certain events in people's lives; for example, it caused its five chosen Signers to meet and befriend one another, so that they could tap into the dragon's full strength and abilities to save the world from annihilation once again.

It also possesses the exceedingly difficult ability to travel through time itself and freely enter various timelines and alternate realities; an ability shown in Bonds Beyond Time. While not stated, the Crimson Dragon can also cause some minor alterations. Yugi was brought from a future where Paradox succeeded, but that chain of events was prevented; it's possible it replaced the Yugi that should have taken his place with the one who helped defeat Paradox.