Niv-Mizzet, Visionary #350 from Foundations is a full art / borderless mythic card that currently sells for about $107 ungraded, with graded copies ranging from $104 at grade 9.5 to $540 at grade 10. A grade 10 copy sells for around $540, about 5.1× the $107 raw price, so high-grade copies are worth grading.