Kytheon's Tactics

Creatures you control get +2/+1 until end of turn. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, those creatures also gain vigilance until end of turn. (Attacking doesn't cause them to tap.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6ojw58ee81pb1hyrnh2auj.