(: Add or to your mana pool.)
Whenever Hollow Shelter becomes tapped, it deals 1 damage to you.
: Hollow Shelter becomes a 2/1 black and blue Zombie creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Hollow Shelter becomes a 2/1 black and blue Zombie creature until end of turn. It's still a land.
