Vivien River, Scion of Erebos

Extort (whenever you cast a spell, you may pay {w/b}. if you do, each opponent loses 1 life and you gain
that much life.)
Non-token creatures you control have afterlife 2
(when this creature dies, create two 1/1 white and
black Spirit creature tokens with flying.)
Creature tokens you control have wither (This
deals damage to creatures in the form of -1/-1
counters.)