Vona, Butcher of Magan

Vigilance, lifelink
{T}, Pay 7 life: Destroy target nonland permanent. Activate only during your turn.

Exquisite Blood

Whenever an opponent loses life, you gain that much life.

Flying
{B}, Pay 2 life: Target creature gets -1/-1 until end of turn.
Whenever you lose life, draw that many cards. (Damage causes loss of life.)

{T}, Sacrifice Mirror Universe: Exchange life totals with target opponent. Activate only during your upkeep.

{T}, Sacrifice Magus of the Mirror: Exchange life totals with target opponent. Activate only during your upkeep.

Whenever you gain life, target opponent loses that much life.

At the beginning of your upkeep, you may have two target players exchange life totals.