Blazing Shoal is a rare Instant — Arcane card from Betrayers of Kamigawa (BOK), collector number 96. Current market price: $5.05 (foil $67.49), TCGplayer market prices via Scryfall.
You may exile a red card with mana value X from your hand rather than pay this spell's mana cost. Target creature gets +X/+0 until end of turn.