I"m not sure if the graveyard trigger would work with your commander. Here is the rule:
If a Commander would be put into a graveyard or exile from anywhere, its owner may choose to move it to the command zone instead. Details
This is a replacement effect; the creature never goes to the graveyard and will not trigger such abilities. bold type mine for emphasis.
Commanders will move to the library or hand as normal; only transitions to Exile or the Graveyard may be replaced.
But the rule does say "may" so my thinking is that if you are able to put the commander in the graveyard, you would have to have another card to get it out? I see body double that could at least be a copy of it, but the commander is still stuck in graveyard.. the only card for getting it out would be false demise and it would need to be attached to commander before you let it go to graveyard.
I could be completely wrong in this, and if I am, I will have learned something new, and will be interested to see what others think about this