Treetop Tomb enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Put Treetop Tomb on top of your library: Add to your mana pool.
, Sacrifice Treetop Tomb: Add to your mana pool.
.
: Add or 
to your mana pool.
to your mana pool. , Sacrifice Treetop Tomb: Add 
to your mana pool.
