Experimental Facility

Every turn that Experimental Facility is under
your control, you must pay {1} in your upkeep
phase.
{2} Tap target land, if that land is under your
control target creature you control gains
+1/+1 until end of turn.
{t}{2} If all the lands you currently control are
tapped, target creature an opponent controls
gains -1/-1 until end of turn.