Wind

I am nowhere.

I am everywhere.

Though I remain invisible,

I can be nigh on invincible.

I am tame as a lamb. 

I am powerful as a stallion.

Though I rage through flame,

I can yet still starve the fire.

I am a gentle touch.

I am a harsh rasp.

Though I be the slightest clamor,

I can be heavy as a sledgehammer.

I am porous as water.

I am solid as stone.

Though I be mere vibrations of molecules,

I can yet create hurricanes in the oceans.