Hero card

Harmonized Crescendo

Instant

PayoffThe more of what it needs is on the battlefield, the stronger it gets: the deck has to feed it a lot

Needs: Changeling, Big Mana

Gives: Spells, Card Draw

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

Build a deck with Harmonized Crescendo as the hero

Makes it work

Changeling Wayfinder · Firdoch Core · Omni-Changeling · Nameless Inversion · Crib Swap · Rooftop Percher · Chitinous Graspling · Mischievous Sneakling

Use instead if you don't have it

Bewildering Blizzard · Rakshasa's Bargain · Rowdy Research · Rime Chill · Arcane Epiphany · Cerebral Download

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)