Reef of Whispers enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Put Reef of Whispers on top of your library: Add to your mana pool.
, , Sacrifice Reef of Whispers: Target player gets a poison counter.
.
: Add 
or 
to your mana pool.
to your mana pool. , , Sacrifice Reef of Whispers: Target player gets a poison counter.
