Haunted Fortress

{t}: Add {w} to your mana pool. If a card left a graveyard this turn and wasn't exiled, instead add one mana of any type to your mana pool.
{1}{w}{w}{t}, Sacrifice Haunted Fortress: Until end of turn, whenever a player is dealt damage they create a 1/1 Colorless Spirit creature token.
Abandoned, but not unguarded.