Razing Naya, Gahiji's Landfall Realm (EDH / Commander)

Realm Razer is the real commander of this deck. The goal is to make it so that Realm Razer can be flickered more or less on command, allowing you to exile all lands on opponents turns (or at least have them all come back tapped) while leaving plenty of mana open for yourself. All the while drawing lots of value off of landfall effects because every single land will ETB at least once per turn cycle (not to mention the opponent landfall cards like Tunnel Ignus and Shattered Angel). This can be done by exiling R.R. under Mimic Vat, reanimating it with Feldon of the Third Path, or using one of the many exile until end step cards like Flickerwisp while a land untapper like Amulet of Vigor or Stone-Seeder Hierophant is out. Additionally, you can reverse the effects of R.R. by exiling it under Admonition Angel, so that flickering the angel flickers all lands. With a land untapper out, this means infinite landfall triggers which will most likely win the game.
Finally, if you wanted to be especially cruel, Oblivion Sower can steal all of one opponent's exiled lands if you manage to hard cast it while R.R. is out. Not only does this give you landfall triggers and land to work with while nobody else has any, it also means that if R.R. dies or leaves the battlefield, that opponent won't the lands back from you.

Recommendations appreciated!