Council of the Absolute

As this creature enters, choose a noncreature, nonland card name. Your opponents can't cast spells with the chosen name. Spells with the chosen name you cast cost {2} less to cast.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6onp5ohasdpb1hceunjzw6.