Glacial Ray is a common Instant — Arcane card from Champions of Kamigawa (CHK), collector number 168. Current market price: $0.11 (foil $0.43), TCGplayer market prices via Scryfall.
Glacial Ray deals 2 damage to any target. Splice onto Arcane {1}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)