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