Cruel Alliance

Teamwork 2 (As an additional cost to cast this spell, you may tap any number of creatures you control with total power 2 or more.) Exile target creature with mana value 3 or less. If this spell was cast using teamwork, instead exile target creature and you gain 3 life.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6onlbmh7yppb1h3wfm6xvs.