Yoda (ROTS) vs Darth Bane (DoE) [Force Only]
On his trip to Korriban, both Creator of the Rule of Two and Grand Master Yoda had a confrontation on the Sith's grave. But, what if this happened?
Bane managed to... be weird, and made his soul to go to his body (That didn't have his armor because reasons). Yet, he didn't have a lightsaber (Let's say Yoda didn't as well), so they both start confrontating each other with the Force. They both end up teleporting (Well, no. But let's have the confrontation started outside of the grave part stuff) to a Korriban desert, and start fighting.
(There is a Nexus that multiplies his abilities. There are twice as... abilitationtivity thing)