Blinding Indoctrination

As Blinding Indoctrination enters, choose a color and an opponent.

White creatures get +2/+1 as long as the chosen player controls a nontoken permanent of the chosen color.

When the chosen player controls no nontoken permanents of the chosen color, sacrifice Blinding Indoctrination.

They no longer knew why they fought, only that the enemy still stood and they must be vanquished.