Flat Depths enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Flat Depths: Add or to your mana pool.
: Flat Depths becomes a 2/1 white and black Soldier Bird creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.: Flat Depths becomes a 2/1 white and black Soldier Bird creature until end of turn. It's still a land.
