Predatory Planning

Kicker {w/b}{w/b} (You may pay an additional {w/b}{w/b} as
you cast this spell.)
If Predatory Planning was kicked, for each
opponent destroy target artifact they control.
Each opponent sacrifices an artifact, for
each opponent who can't they lose 3 life and
you gain 3 life.
Use their own foolish greed against them, taxes
must be paid or consequences will be handed out
freely.