(: Add or to your mana pool.)
Treetop-works enters the battlefield tapped.
: Treetop-works becomes a 2/1 green and blue Leech creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Treetop-works becomes a 2/1 green and blue Leech creature until end of turn. It's still a land.
