Melek, Reforged Researcher

Melek's power and toughness are each equal to twice the number of instant and sorcery cards in your graveyard. The first instant or sorcery spell you cast each turn costs {3} less to cast.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o1xaz01yppb1hoh2r62iu.