Mage Duel

This spell costs {2} less to cast if you've cast another instant or sorcery spell this turn. Target creature you control gets +1/+2 until end of turn. Then it fights target creature you don't control. (Each deals damage equal to its power to the other.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oh176c7cppb1h72sgon84.