Tanya, The Bloodweaver

Haste, Lifelink
{t}, Discard a Card, target player gains life equal
to that cards converted mana cost
Whenever another player loses life, you may pay
that much life, if you do, return target card in
your graveyard with a converted mana cost less
than the amount of life paid to your hand
Ones who choose The Bloodweaver, Blood is essence of
Pain and Pleasure