(: Add or to your mana pool.)
When Growth Caves enters the battlefield, sacrifice it unless you pay .
: Growth Caves becomes a 2/2 black and green Elf creature with trample until end of turn. It's still a land.
: Add 
or 
to your mana pool.).
: Growth Caves becomes a 2/2 black and green Elf creature with trample until end of turn. It's still a land.
