Defiler of Faith

Vigilance As an additional cost to cast white permanent spells, you may pay 2 life. Those spells cost {W} less to cast if you paid life this way. This effect reduces only the amount of white mana you pay. Whenever you cast a white permanent spell, create a 1/1 white Soldier creature token.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o740t49nvpb1hk4compac.