Plague of Locusts

Ordain (When you cast this spell you may tap a
creature you control that shares a color with it. If
you do, this spell becomes ordained)
Destroy target land. Then if Plague of Locusts
was ordained, all creatures get -2/-2 until end
of turn.
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"To all others the locust is a curse, but to the Ghulam
it is a blessing from above."