Hero card

Bloodline Bidding

Sorcery

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

Needs: Changeling, Big Mana

Gives: Spells

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

Build a deck with Bloodline Bidding as the hero

Makes it work

Changeling Wayfinder · Graveshifter · Firdoch Core · Prideful Feastling · Nameless Inversion · Rooftop Percher · Chomping Changeling · Barkform Harvester

Use instead if you don't have it

Behold the Sinister Six! · Hex of Undeath · Restoration Seminar · Relive the Past · Return to the Light Realms · Wisdom of Ages

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)