(: Add or to your mana pool.)
Centaur Knoll enters the battlefield tapped.
: Centaur Knoll becomes a 2/2 green Leech creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Centaur Knoll becomes a 2/2 green Leech creature until end of turn. It's still a land.
