(: Add or to your mana pool.)
When Underground-wood enters the battlefield, sacrifice it unless you pay .
, Sacrifice a Swamp: Add to your mana pool.
, : Put a 2/2 green Leech Elf creature token onto the battlefield.
: Add 
or 
to your mana pool.)., Sacrifice a Swamp: Add to your mana pool.
, : Put a 2/2 green Leech Elf creature token onto the battlefield.
