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 D20
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This article is a D20 reference page
The System Reference Document is a comprehensive toolbox consisting of rules, races, classes, feats, skills, various systems, spells, magic items, and monsters compatible with the d20 System version of Dungeons & Dragons and various other roleplaying games from Wizards of the Coast.
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Bowl of Commanding Water Elementals: This large container is usually fashioned from blue or green semiprecious stone. It is about 1 foot in diameter, half that deep, and relatively fragile. When the bowl is filled with fresh water, and certain words are spoken, a Large water elemental appears. The summoning words require 1 full round to speak. In all ways the bowl functions as the summon monster VI spell. Only one elemental can be called at a time. A new elemental requires the bowl to be filled with new water, which cannot happen until after the first elemental disappears (is dispelled, dismissed, or slain).
If salt water is used, the elemental is Huge rather than Large (as if summon monster VII had been cast).
Strong conjuration; CL 13th; Craft Wondrous Item, summon monster VI, summon monster VII; Price 100,000 gp; Weight 3 lb.
System Reference Document -> Magic Items: Wondrous Items