Hero card

Self-Destruct

Instant

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

Needs: Valiant

Gives: Spells

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

Build a deck with Self-Destruct as the hero

Makes it work

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

Benefits from it

Bria, Riptide Rogue · Rediscover the Way · Pyre Rhymer · Elusive Otter

Use instead if you don't have it

Twin Bolt · Zoyowa's Justice · Blazing Crescendo · Giantfall · Rabid Gnaw · Opera Love Song

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)