Sandstone Coliseum enters the battlefield tapped unless you sacrifice a creature.
: Add or to your mana pool.
Put Sandstone Coliseum on top of your library: Add to your mana pool.
, Sacrifice Sandstone Coliseum: Add to your mana pool.
: Add 
or 
to your mana pool.
to your mana pool. , Sacrifice Sandstone Coliseum: Add 
to your mana pool.
