(Dry Depths isn't a spell.)
Dry Depths enters the battlefield tapped unless you control two or more creatures.
, : Look at target player's hand.
: Add or to your mana pool.
Put Dry Depths on top of your library: Add to your mana pool.
, 
: Look at target player's hand.: Add 
or 
to your mana pool. to your mana pool. 
