Horizon Basin enters the battlefield tapped unless you control an enchantment.
: Add or to your mana pool.
: Add to your mana pool. Put Horizon Basin on top of your library.
, : Add one mana of any color to your mana pool.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Horizon Basin on top of your library.
, : Add one mana of any color to your mana pool.
