Forbidding Ruins enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Forbidding Ruins: Add or to your mana pool.
: Forbidding Ruins becomes a 2/1 white and green Knight creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.: Forbidding Ruins becomes a 2/1 white and green Knight creature until end of turn. It's still a land.
