Reflection and Shadow pass?

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For a client I need to render out 4 different language versions of basically a metallic plate with floating letters in-front of it.

In each version only the letters change.

The renders take 30 mins PER FRAME! And The client needs the letters to be reflected in the metal plate.

Is it possible in Maya to render some kind of reflection pass? That way I could render just the plates once, and then the letters and passes and comp them together?

Is there a trick I can use to fake the reflection? I just need them reflected in a simple flat surface with some light bumps on the surface.