Hero card

Masterful Flourish

Instant

SpellUsed once: what it does depends on when you cast it

Needs: Valiant

Gives: Spells

Not in winning lists yet: read from the card text and the graph

Build a deck with Masterful Flourish as the hero

Makes it work

Emberheart Challenger · Veteran Guardmouse · Nettle Guard · Whiskervale Forerunner · Seedglaive Mentor · Mouse Trapper · Whiskerquill Scribe · Flowerfoot Swordmaster

Benefits from it

Drake Hatcher · Elusive Otter · Aberrant Manawurm · Balmor, Battlemage Captain · Bria, Riptide Rogue

Use instead if you don't have it

Dark Endurance · Reroute Systems · Crumb and Get It · Magic Damper · Chase Inspiration · Octopus Form

Cards in the meta that answer it

Countersculpt (Azorius Control) · Inevitable Defeat (4-Color Control) · No More Lies (Azorius Control) · We Say Thee Nay! (Dimir Aggro)