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