Shadow Sora

This card can only be in your deck if your commander
has Sora in its name, ignoring color identity.
When your Commander dies, if this card
is in your hand, you may reveal it. If you do, put
this creature onto the battlefield and send your
Commander from your Command Zone to Exile,
and it cannot leave Exile while this card is on the battlefield.
When this card leaves the battlefield, you may
return your commander to the command zone
without increasing commander tax.