Xander, Cold Heart

At the beginning of your upkeep, mill two cards
and exile up to one target nonland permanent
from your graveyard. Then each opponent loses
X life and you gain X life, where X is the total
number of cards you own in exile.
As long as Xander, Cold Heart is equipped to a creature, you may cast that creature for {2} less.
You may equip Xander to cards you own in exile.
Reconfigure {b}{b}{b}