Sorry this took so long. I'm off vacation and back at work.
[X] Plan Dragon Pirate!
-[X] Viserys uses Ancestral Awakening to learn Snowsight and Quench.
--[X] Rina casts Life Bubble, Snow Walk, Mass Entropic Shield, Mass Shield of Faith, and Mass Aid on everyone. She casts Sign, True Seeing, Snowsight, and Ironskin on herself.
--[X] Dany casts Greater Magic Fang on Viserys, Ironskin, True Seeing, and Sign on herself, and Freedom of Movement on Richard.
--[X] Tyene casts Mass Resist Energy(Fire), Mass Resist Energy (Cold) Invisibility, and Fickle Winds on everyone, and Greater Blindsight on herself, Waymar, Dany, Rina, and Richard (using Versatile Spellcaster for two of the Greater Blindsight spells).
--[X] Waymar casts See Invisibility and Heart of Water if it isn't already active.
--[X] Viserys casts Scinitillating Scales, Mirror Image, Shield, Starmantle, and Grand Destiny (via Greater Shadow Enchantment), on himself, plus Nine Lives if it isn't already active. He then casts Snowsight (except for Rina) and Searing, Agonizing, Mass Fire Shield on everyone.
-[X] Once everyone is prepared, Viserys will Teleport the group directly in the path of the trio of ships, but well above the sea of oil.
--[X] Rina will cast Blizzard so that the ships are engulged by the magical snowfall, with approximately 3/4 of the Blizzard in front of them.
---[X] Viserys then Blood Wishes a Wall of Force spell in the path of the ships extending the full 170 feet his caster level is capable of, but at an angle. He then uses Celerity to Blood Wish a duplicate of the Wall of Force, but on the opposite side, so that the two Walls form a massive V that will force all three ships toward a single point when they collide with it.
----[X] Once the ships collide, Dany uses Ideas to Dreamcast a
Wall of Scales spell, causing the wall to form in such a way as to be anchored to all three ships as tightly as can be managed, while, if possible, halving the area covered in order to double the thickness of the wall.