(: Add or to your mana pool.)
When Hollow Heath enters the battlefield, sacrifice it unless you pay .
, Sacrifice a Swamp: Add to your mana pool.
, : Target land becomes a 3/3 white Spirit creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.)., Sacrifice a Swamp: Add to your mana pool.
, : Target land becomes a 3/3 white Spirit creature until end of turn. It's still a land.
