Marvel: Magnetokinesis

Lorna Dane (Polaris)
Polaris has the ability to manipulate magnetism. Although she has the potential to exercise all of the powers that Magneto has, as yet she has only used powers involving the manipulation of magnetic, electrical, and gravitational fields. Moreover, she has yet to summon as great an amount of energy as Magneto has. The exact limits on the amount of weight that she can magnetically lift at present have not been measured. Since she has, in the past, preferred not to use her powers in combat situations, and has decades less experience with them, she is not up to par with Magneto's level of experience. As with Magneto, it is unknown whether Polaris' powers are purely psionic or whether they derive from her physically.

The main feat made possible by magnetism is Polaris' ability to lift and manipulate metal. She has shown such fine-tuned skills as to nearly liquefy, mend, and reconstruct metallic objects, and has some level of influence on the ferrous metals that reside in everything. She once mended and reconstructed silverware and metallic plates into a metallic suit identical to Magneto's costume.

Max Eisenhardt/Erik Lehnsherr (Magneto)
Magneto has comprehensive control over all forms of magnetism and utilizes that control to manipulate ferrous metals and achieve a variety of effects. He recently proved able to effectively hold together the headless form of a Celestial. Magneto can manipulate an entire planet's electromagnetic field and once even pulled back the giant metallic 'bullet' where Shadowcat was trapped inside which was at least a few lightyears away from Earth, though these are tasks that require great effort on his part. Magneto has harnessed magnetism to stop arms, raise islands from ocean floors, move mountains, change the course of rivers, and threaten to devastate the world with floods and earthquakes. Magneto once blanketed the entire globe with a self-generated electromagnetic pulse that caused widespread devastation. Moreover, he can use his magnetic powers in more than one way simultaneously. He can completely assemble a complicated machine within seconds through his powers. It is unclear whether Magneto's power is psionic or purely physiological in nature.

Onslaught
Onslaught has the power to shape and manipulate magnetic fields that exist naturally or artificially. He can draw magnetic force from outside himself, or can also generate magnetic force within himself. Onslaught's power is psionic and physiological in nature. He can lift, move, and alter objects. Onslaught can project metal at an unparalleled velocity and place tremendous pressure on metallic substances to liquefy and reshape them, manipulate the iron-enriched blood-flow to one's brain to induce aneurysms or unconsciousness, redirect the flow of blood through one's brain to alter thoughts and perceptions or blank a person's mind completely, levitate a person or control a person's actions by manipulating the iron in their bloodstream, remove the iron from the bloodstream entirely through a person's skin, control ferrous particles in the atmosphere, alter the Earth's magnetic field which extends into space as the magnetosphere, prodigiously increase his own strength to superhuman levels, and achieve a wide range of other effects.