Hero card

Unstable Experiment

Instant

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

Needs: Valiant

Gives: Graveyard, Spells, Card Draw

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

Build a deck with Unstable Experiment as the hero

Makes it work

Whiskerquill Scribe · Emberheart Challenger

Benefits from it

Master's Councillors · Most Decrepit Old Bird · Council of Echoes · Starving Revenant · Dreadwing Scavenger · Frilled Cave-Wurm · Didact Echo · Mind Drill Assailant

Use instead if you don't have it

Mental Modulation · Accumulate Wisdom · Prismari Charm · Into the Roil · Snatch Back · Deduce

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)