(: Add or to your mana pool.)
Horizon Underground enters the battlefield tapped unless you pay .
, : Target creature gains vigilance until end of turn.
, , Sacrifice Horizon Underground: Put a -1/-1 counter on target creature.
: Add 
or 
to your mana pool.)
., : Target creature gains vigilance until end of turn., , Sacrifice Horizon Underground: Put a -1/-1 counter on target creature.
