I Could Sense Metal, so I Turned Around by Mining.

What's the use of a metal mage, you ask? "[Metal Affinity] made me do a backflip while wearing heavy armor." "[Metal Affinity] made me become Magneto from another world." "[Metal Affinity] allows me to sense mineral veins and monopolize the entire continent's mineral deposits." "Can you please stop mentioning [Metal Affinity]?" "Okay." "[Ironosis] makes me indestructible." "[Blessing from the Two Gods] allows me to control the power of the storm." "As for [Star Commander]..." Ethan grinned and clenched his fists. "—Could crush your head."