Leechridden Vents enters the battlefield tapped.
: Add or to your mana pool.
: Add to your mana pool. Put Leechridden Vents on top of your library.
, , Sacrifice Leechridden Vents: Destroy target monocolored permanent.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Leechridden Vents on top of your library., , Sacrifice Leechridden Vents: Destroy target monocolored permanent.
