[MTG] -Magic ruling question about a Commander deck-?

903.11. If a commander would be put into its owner's graveyard from anywhere, that player may put it into the command zone instead.

So you can put it in the graveyard if you desire.

1. You are never forced to put the commander in the command zone.

2. You can only put the commander in the command zone if it would be exiled, destroyed, or sent to the graveyard due to sacrifice or 0 toughness.

If you have 2 Sharuums in play (with Sculpting Steel), you can infinite loop it by using the trigger from Sharuum (SS Sharuum) returning Sharuum from the graveyard returning SS and so on. Definitely a good loop if you have something in play that does things when a creature comes into play or leaves play (Gravepact or Essence Warden for instance).

The Commander begins in the Command Zone. It is style of just like the Exile Zone, but technically one of a kind. You may solid the Commander from the Command Zone any time you would frequently forged it from your hand. Every time the Commander would leave the Battlefield to anywhere, you can also choose to maneuver him back to the Command Zone, however whenever you do so, the mana fee to forged the Commander raises via 2. Commander is a Singleton format, so which you can simplest have 1 replica of any card, besides for general lands (and Relentless Rats). Your Commander can also be any quantity of colors, however its colors avert the colors of the other cards within the deck and the colors of mana that you would be able to produce (any mana of a further color turns into colorless mana as an alternative).