Shadowheart, the Lost Refuge

When Shadowheart, the Lost Refuge enters the battlefield, you lose 2 life.
{b}, {t}, Pay 1 life: Exile a card from your hand. Draw a card.
{x}{x}{b}, {t}, Pay X life: Return X target cards exiled with Shadowheart, the Lost Refuge to
your Hand.
The forsaken will return.