Tidal Tubes enters the battlefield tapped.
: Add or to your mana pool.
: Add to your mana pool. Put Tidal Tubes on top of your library.
: Return Tidal Tubes to its owner's hand.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Tidal Tubes on top of your library.: Return Tidal Tubes to its owner's hand.
