EDH + DCI

[Avodroc13]

Can I use {Look At Me, I'm The DCI} in EDH and ban the opponent's commander?

[Remillo]

If you somehow legally play an Un-Card, I don't see why that WOULDN'T work.

[particle]

Can I use {Look At Me, I'm The DCI} in EDH and ban the opponent's commander?

if your opponents are ok with you using Un cards since they're techinaclly banned.

[LinkCelestrial]

It's frowned upon to permanently dispose of Commanders, so odds are your playgroup won't allow it.

[The1337Magician]

You could always use  {Nevermore} or  {Meddling Mage} or {Voidstone Gargoyle}.