Rochelle, the All-Watcher

Whenever you cast an arcane spell or a spirit
enters the battlefield under your control, you
may gain 1 life and have target opponent loose
1 life.
{3}{w/u}{w/u}: Create 2 1/1 white black Spirit creature
tokens with flying, then tap any 2 creatures.
{3}{w/b}{w/b}: Return target spirit or arcane spell
from your graveyard to your hand.