(: Add or to your mana pool.)
When Krosan Plain enters the battlefield, sacrifice it unless you pay .
: Krosan Plain becomes a 2/1 green and white Snake Leech creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.).: Krosan Plain becomes a 2/1 green and white Snake Leech creature until end of turn. It's still a land.
