Hero card

Self-Reflection

Sorcery

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 Self-Reflection as the hero

Makes it work

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

Benefits from it

Scolding Administrator

Use instead if you don't have it

Trystan's Command · Coiling Rebirth · Multiversal Incursion · Wisdom of Ages · Back on Track · Wanderwine Farewell

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)