# Material question - how to make this reflective?

Ok, I have a diffuse/emissive material applied to the large blue cube below:

This is created with these nodeS:

Ive tried adding in some sort of glossy node but am not versed with in depth making materials- I need the large blue glowing cube to also REFLECT the glowing things/lights around it (i.e. the emissive ring)

I need it to have some reflection like the black cubes do. How can I integrate this?