Nether Traitor

Nether Traitor {B}{B}

Creature - Spirit | Power/Toughness: 1 / 1
Haste
Shadow (This creature can block or be blocked by only creatures with shadow.)
Whenever another creature is put into your graveyard from the battlefield, you may pay {B}. If you do, return Nether Traitor from your graveyard to the battlefield.
Edition: [TSP] Time Spiral ( R · #120 )