Tear Asunder is a uncommon Instant card from Tarkir: Dragonstorm Commander (TDC), collector number 273. Current market price: $0.34, TCGplayer market prices via Scryfall.
Kicker {1}{B} (You may pay an additional {1}{B} as you cast this spell.) Exile target artifact or enchantment. If this spell was kicked, exile target nonland permanent instead.