Drowned Tomb enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Put Drowned Tomb on top of your library: Add to your mana pool.
: Drowned Tomb becomes a 2/2 blue Wizard creature until end of turn. It's still a land.
.
: Add or 
to your mana pool.
to your mana pool. 
: Drowned Tomb becomes a 2/2 blue Wizard creature until end of turn. It's still a land.
