Hero card

Mm'menon, Uthros Exile

Legendary Creature - Jellyfish Advisor

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, Artifacts

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

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

Build a deck with Mm'menon, Uthros Exile as the hero

Makes it work

Donatello, Way with Machines · Kraum, Violent Cacophony · Adrenaline Jockey · Mabel, Valley Hero · Sokka, Bold Boomeranger · Tidus, Blitzball Star · Justice, Vance Astrovik · Atlantean Cavalry

Benefits from it

Pensive Professor · Goblin Boarders

Use instead if you don't have it

Plumecreed Mentor · Spectacular Skywhale · Riku of Many Paths · Abigale, Poet Laureate · Fin Fang Foom · Donatello, Way with Machines

Cards in the meta that answer it

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