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