I'm thinking the line is supposed to be magnetic, and that's a rail gun on its back. The eyebrows, beards, and mustaches would be ferris material.
It's a small, pixie-like, event exclusive legnedary Pokemon. Sounds like a Mew-like Pokemon to me.
No little legendary has gone over like 2'2", and most are 1' exactly. Magearna is 3'3". Marshadow looks like it's a foot tall. Magearna is not the little legendary, at all.