Sigma, the Specter's Scion

You may have this card in your deck if The
Silver Specter is your commander.
Sigma and commander creatures you control
get +1/+1 and have hexproof.
{3}{g}{u}, {t}: Exile target creature card that was
put in a graveyard from the battlefield this turn.
Put a +1/+1 counter on Sigma, then this creature
gains all abilities of the exiled card.