Shameless Charlatan

Once the game begins, your two commanders are tracked separately. If you cast one, you won’t have to pay an additional {2} the first time you cast the other. A player loses the game after having been dealt 21 combat damage from any one of them, not from both of them combined (although your Background won’t usually be a creature anyway).

If you control a Background that grants an ability to commander creatures you own, and you own more than one commander creature, each of them will have that ability.

If your commander loses the choose a Background ability or stops being a Background during the game, as appropriate, it is still your commander.

You can choose two commanders that are the same color or colors.

If your commander becomes a copy of something else while you control Shameless Charlatan, it will still be your commander and it will still have the ability granted to it.

If Shameless Charlatan is your commander and somehow becomes a creature, and you use the ability it grants itself to make it a copy of another creature, it will no longer have its ability so it would no longer grant the activated ability to commander creatures you own (including itself).