: Search your library for a Mountain or Plains card and put it onto the battlefield tapped. Shuffle your library, then put Horizon Bank on top of it.
, Sacrifice Horizon Bank: Add to your mana pool.
: Search your library for a Mountain or Plains card and put it onto the battlefield tapped. Shuffle your library, then put Horizon Bank on top of it., Sacrifice Horizon Bank: Add 
to your mana pool.
