Whenever Horizon Knoll becomes tapped, it deals 1 damage to you.
: Add or to your mana pool.
Put Horizon Knoll on top of your library: Add to your mana pool.
: Target creature loses all landwalk abilities until end of turn.
: Add 
or 
to your mana pool.
to your mana pool. : Target creature loses all landwalk abilities until end of turn.
