Waterveil Flats enters the battlefield tapped unless you pay .
: Add to your mana pool. Return Waterveil Flats to its owner's hand.
, Sacrifice Waterveil Flats: Add to your mana pool.
.
: Add 
to your mana pool. Return Waterveil Flats to its owner's hand., Sacrifice Waterveil Flats: Add 
to your mana pool.
