Flat Coliseum enters the battlefield tapped.
: Add to your mana pool. Flat Coliseum doesn't untap during your next untap step.
: Flat Coliseum becomes a 2/1 white and blue Knight creature until end of turn. It's still a land.
: Add 
to your mana pool. Flat Coliseum doesn't untap during your next untap step.: Flat Coliseum becomes a 2/1 white and blue Knight creature until end of turn. It's still a land.
