Cursed Retreat enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Cursed Retreat: Add or to your mana pool.
: Cursed Retreat becomes a 2/2 blue Fish creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.
: Cursed Retreat becomes a 2/2 blue Fish creature until end of turn. It's still a land.
