Hero card

Mirrorform

Instant

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

Needs: Big Mana

Gives: Spells

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

Build a deck with Mirrorform as the hero

Makes it work

Bayo, Irritable Instructor · Electro, Assaulting Battery · Rapturous Moment

Use instead if you don't have it

Time Stop · Homesickness · Betrayal at the Vault · Raphael's Technique · Thranduil's Decree · Zuko's Exile

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)