(: Add or to your mana pool.)
Bog Mesa enters the battlefield tapped unless you control an enchantment.
: Bog Mesa becomes a 1/1 black and red Horror creature with first strike until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Bog Mesa becomes a 1/1 black and red Horror creature with first strike until end of turn. It's still a land.
