Ghost, The Shade Knight

Lifelink
When an opponent loses life, Ghost, The Shade Knight gains a +1/1 Counter on itself
When Ghost, The Shade Knight is sent to your graveyard, it creates a 2/2 Shade Token with Fly and vigilance
{t}{b}{b}: You can remove any Number of +1/1 Counters on Ghost, The Shade Knight to deal X damage to all creatures your opponents control, where X is equal to the amount of counters used. Ghost, The Shade Knight cannot use this ability if a Shade token is on the battle field and in your control.