Question

I brought landorus to the abundant shrine but I am not getting the reveal glass?

Answer 1

Hmm.
Sounds kinda glitchy.

1. Take Landorus to the Abundant Shrine. Don't take Thundurus or Tornadus
2. Make sure you talk to the Old Man. He gives you the Reveal Glass
3. If the above doesn't work defeat the Elite 4 (Again. if you already beat them)

That should help. If not comment and tell me.

Answer 2

You need the landorus from the Pokemon dream radar, the one that's in therrain form.