Yamato

Transformation Casting Time: 1 bonus action Range: Self Components: V, S, M (a shard of ice) Duration: Concentration, up to 1 minute You transform your weapon into a spectral blade of frost and force. Your attacks deal 4d10 cold and 2d10 force damage combined in a 30 feet straight line in front of you. The targets are paralyzed until the end of your next turn. The targets must succeed a Dexterity saving throw to suffer only half damage and to not suffer paralysis.