Say I have an EDH/Commander deck with Omnath, Locus of Mana as my commander.
Does that count as being in my deck?
Or can I have another Omnath, Locus of Mana in my deck? (If so I imagine I would have to follow all the Legendary rules about playing the second one.)
If I could include a second one in my deck that could be useful (if the commander version gets killed a few times I would be able to play the one from the deck for only 3 mana.)