Sin-Eater vs Fully Powered Magneto
Nth Metal: As old as Thanagar itself, Synn is one of the few that still remembered how to tap into Nth metal's true powers. The Nth metal provided Synn with absolute control over the four fundamental forces of the universe (strong, weak, gravitational, and electromagnetic). His control seems to give him almost limitless powers and he has displayed the ability to grow, fly, project energy blasts, increase his strength, dissolve atomic bonds and control gravity.
VS
Black Hole Godlike Magneto.
SE is a beast from what I know, Mags will have his hands full.