Chandra's Defeat is a uncommon Instant card from Hour of Devastation (HOU), collector number 86. Current market price: $0.25 (foil $0.74), TCGplayer market prices via Scryfall.
Chandra's Defeat deals 5 damage to target red creature or red planeswalker. If that permanent is a Chandra planeswalker, you may discard a card. If you do, draw a card.