Hammerfall
Hammerfall is a common Railforged spell in Monster Train 2 costing X Ember (it consumes all remaining Ember), added by the Railforged DLC.
Deal 15X damage to an enemy unit or apply +5X Attack to a friendly unit.
““Some hammers are meant to forge weapons and armor, while others were meant to bend steel thick enough to hold a rail together.”—Herzal, “My Workshop, My Life””