Hero card

Moonstone, Harsh Mistress

Legendary Creature - Human Doctor Villain

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

Needs: Mayhem

Gives: Graveyard, Flyers, Hero / Villain

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

Build a deck with Moonstone, Harsh Mistress as the hero

Makes it work

Fleem, Goben's Creation · Green Goblin · Desecrex, Gift of Servitude · Carnage, Crimson Chaos · Prison Break · The Ancient One · Macabre Waltz · Anthropede

Benefits from it

Yellowjacket, Heartless Marauder · Crossbones, Malicious Mercenary · Rishei, Getaway Accomplice · Vulture, Scheming Scavenger · Baron Strucker, HYDRA Overlord · Prowler, Clawed Thief · Carlo, Suave Schemer · The Masters of Evil

Use instead if you don't have it

Bloodletter of Aclazotz · Neriv, Heart of the Storm · Silverquill, the Disputant · Green Goblin · Fleem, Goben's Creation · Akul the Unrepentant

Cards in the meta that answer it

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