You conjure a spear of highly compressed water and hurl it toward a target within range. Choose one of the following effects when you cast the spell:   Piercing Strike: The water spear streaks toward a creature you can see within range. You make a ranged spell attack, and deal 3d6 piercing damage.
-Amplified Impact: If the caster is within 10 feet of a significant water source (e.g., a pond, river, or even a barrel of water), the spear draws extra power. The damage increases by 1d6.   Forceful Burst: You hurl the spear at a point you can see within range. The spear bursts upon impact, sending a concussive shockwave of water outward. Each creature within 10 feet of that point must succeed on a Strength saving throw or be pushed 10 feet away from the point of impact and take 2d6 bludgeoning damage. On a successful save, they take half damage and are not pushed.
-Surge Effect: If the caster is within 10 feet of a significant water source, the burst radius increases to 15 feet.