Rustic Bosk enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Sacrifice Rustic Bosk: Add or to your mana pool.
: Rustic Bosk becomes a 0/4 white and black Cleric creature with defender until end of turn. It's still a land.
.
: Add 
or 
to your mana pool. or to your mana pool.: Rustic Bosk becomes a 0/4 white and black Cleric creature with defender until end of turn. It's still a land.
