Nahiri, the Harbinger is a mythic Legendary Planeswalker — Nahiri card from Shadows over Innistrad (SOI), collector number 247. Current market price: $0.41 (foil $5.19), TCGplayer market prices via Scryfall.
+2: You may discard a card. If you do, draw a card. −2: Exile target enchantment, tapped artifact, or tapped creature. −8: Search your library for an artifact or creature card, put it onto the battlefield, then shuffle. It gains haste. Return it to your hand at the beginning of the next end step.