Hero card

Growth Curve

Sorcery

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

Needs: Valiant

Gives: Counter +1/+1, Spells

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

Build a deck with Growth Curve as the hero

Benefits from it

Primeval Bounty · Thranduil's Company · Sazh's Chocobo · Beorn's Hospitality · Mossborn Hydra · Bristly Bill, Spine Sower · Claim the Kingdom · Ride the Shoopuf

Use instead if you don't have it

Tam's Resistance · Throw from the Saddle · Beastie Beatdown · Malamet Battle Glyph · Longstalk Brawl · Synchronized Charge

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)