Lake Ravine enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Lake Ravine: Add or to your mana pool.
: Lake Ravine becomes a 2/2 red Goblin creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.
: Lake Ravine becomes a 2/2 red Goblin creature until end of turn. It's still a land.
