Lithomantic Barrage is a uncommon Sorcery card from March of the Machine (MOM), collector number 152. Current market price: $0.27 (foil $0.37), TCGplayer market prices via Scryfall.
This spell can't be countered. Lithomantic Barrage deals 1 damage to target creature or planeswalker. It deals 5 damage instead if that target is white and/or blue.