Rootwater Karst enters the battlefield tapped unless you pay .
: Add or to your mana pool.
: Add to your mana pool. Put Rootwater Karst on top of your library.
, Sacrifice Rootwater Karst: Target creature gets +2/+2 until end of turn.
.
: Add or 
to your mana pool.: Add 
to your mana pool. Put Rootwater Karst on top of your library., Sacrifice Rootwater Karst: Target creature gets +2/+2 until end of turn.
