The official GemStone IV encyclopedia.
This maneuver can be blocked with a shield.
The water wyrd closes its eyes and draws in on itself, arms crossed over its aqueous torso. Suddenly its eyes flash open and it hurls a blast of water at you! Your attempt to dodge the water jet is a moment too slow, and the powerful bolt strikes squarely, flattening you! ... 5 points of damage! Upward thrust lifts you several inches off the ground. You are stunned for 1 round! Roundtime: 7 sec.
Water elementals found in the Ruined Temple have a stronger version:
The water elemental closes its eyes and draws in on itself, arms crossed over its aqueous torso. Suddenly its eyes flash open and it hurls an incredibly powerful blast of water at you! Time slows to a standstill as you watch the watery blast slam into your seemingly frozen body! You vaguely realize that you are screaming as your shattered body is blasted back into a crumpled heap! ... 50 points of damage! You try desperately to keep your footing, but fall on your rear instead. Roundtime: 20 sec.
Creatures capable of performing this maneuver include: