Driftloon

You may cast Driftloon from your graveyard by
paying 4 life instead of its mana cost.
Flying, protection from Warriors and colorless
creatures that are nonartifact and nonSpirit.
Haunt (When this creature dies, exile it haunting
target creature.)
Creature Driftloon haunts has Soulshift 4.
Soulshift 4 (When this creature dies, you may return
target Spirit card with mana value 4 or less from your
graveyard to your hand.)