Aribeth, Fallen Paladin

Lifelink, Vigilance
Aribeth, Fallen Paladin's power is equal to your devotion to black, and toughness is equal to your devotion to white.
At the beginning of your upkeep, if your devotion
to white is greater than 10, draw a card and gain
10 life. If your devotion to black is greater than
10, each opponent discards a card and loses 10 life.