Hero card

Berta, Wise Extrapolator

Legendary Creature - Frog Druid

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

Needs: Counter +1/+1

Gives: Counter +1/+1, Tokens, Legendary

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

Build a deck with Berta, Wise Extrapolator as the hero

Makes it work

Ant-Man, Colony Commander · The Astonishing Ant-Man · Sovereign Okinec Ahau · Giant Beaver · Helga, Skittish Seer · Stocking the Pantry · Nicanzil, Current Conductor · Insidious Roots

Benefits from it

Gnarlid Colony · Dyadrine, Synthesis Amalgam

Use instead if you don't have it

Outlaw Stitcher · Seedship Agrarian · Pet Avengers · Geralf, the Fleshwright · Donatello, Mutant Mechanic · Lilysplash Mentor

Cards in the meta that answer it

Countersculpt (Azorius Control) · Get Lost (Azorius Control) · Jeskai Revelation (4-Color Control) · Inevitable Defeat (4-Color Control)