Hero card

Echocasting Symposium

Sorcery - Lesson

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

Needs: Valiant, Big Mana

Gives: Spells

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

Build a deck with Echocasting Symposium as the hero

Makes it work

Emberheart Challenger · Veteran Guardmouse · Whiskervale Forerunner · Nettle Guard · Mouse Trapper · Whiskerquill Scribe · Seedglaive Mentor · Flowerfoot Swordmaster

Benefits from it

Rediscover the Way · The Prima Vista

Use instead if you don't have it

River's Rebuke · Riverwheel Sweep · Jetsam · Turtles in Time · Travel the Overworld · Dream Harvest

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)