(: Add or to your mana pool.)
Dreadship Clachan enters the battlefield tapped unless you sacrifice an artifact creature.
: Dreadship Clachan becomes a 2/1 black and white Zombie Rat creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Dreadship Clachan becomes a 2/1 black and white Zombie Rat creature until end of turn. It's still a land.
