BOZ said:One thought – he really doesn’t even need water walking. All he has to do is get close to shore. Most shorelines are not deeper than 100 feet, so he’ll stick out above the water and be pretty damned impressive to see as it is..
BOZ said:Altering “swamping” a bit to make this:
Create Waves (Su): Oceanus can create waves up to X feet high through force of will. This causes any sailing vessel within 300 feet to capsize if the character steering it fails a Profession (sailor) check (DC 15). A modifier applies to this check, based on type of ship, as follows: rowboat -2, warship +0, galley or keelboat +3, sailing ship +5, longship +7. Any creature flung into the water by a capsizing ship must succeed at a Swim check (DC 15) or immediately begin drowning.
Feel free to offer suggestions on changing the values or modifiers.
BOZ said:Also, I think I’ll ditch the Vortex power in favor of Control Winds. But maybe we should amp it up a bit – make it more than just another spell-like ability.
Or maybe I’ll keep vortex and just leave control winds as a spell-like or spell. Not sure yet.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.