Hero card

Aggressive Negotiations

Sorcery

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

Needs: Valiant

Gives: Counter +1/+1, Hand disruption, Spells

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

Build a deck with Aggressive Negotiations as the hero

Makes it work

Seedglaive Mentor

Benefits from it

Entropic Battlecruiser · Tinybones, Bauble Burglar · Aclazotz, Deepest Betrayal · Lecturing Scornmage · Tinybones, Pocket Nuisance · Primeval Bounty · Tempest Angler · Long Feng, Grand Secretariat

Use instead if you don't have it

Render Speechless · Cerebral Confiscation · Seeker's Folly · Cost of Brilliance · Temporal Intervention · Psychic Whorl

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)