Head of the Class

The first spell you cast during each of your turns that targets a creature costs {W}{B} less to cast. This effect reduces only the amount of colored mana you pay. Repartee — Whenever you cast an instant or sorcery spell that targets a creature, this creature perpetually gets +1/+1.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6ome95gbf7pb1h109c0r8n.