As Krynn's Vanguard got engulfed in the whiteout blizzard, they encountered this being that had changed form so many times and proceeded to defend themselves as it moved forward. It wasn't necessarily chasing after them as much as it just so happened that they were in its way. After a while, they managed to fend it off for long enough that the storm they got caught in had passed.
Travelling further they came across some ruins of what looked to have once been a medium sized castle, or keep of sorts. This place had given way to time and the elements that only a portion of the first floor stood. Entering inside, they found a large foyer that had caved-in on itself that the stairways to higher levels were broken and blocked off by the rubble creating a more natural shelter. There was a stairway that led down however.
Investigating downstairs, they found five doors. Two on either side, and one at the end of the hall. Making their way through the rooms, they found a study with an empty wine rack, a fireplace, a desk with nothing of note, and a small sitting area with a small bookcase filled with books in draconic that after flipping through a few, were all for leisure rather than knowledge. The next room hosted a small kitchen, and another a bedroom. These rooms were also immaculately clean, and any attempt to dirty them were magically whisked away leaving them immaculate. The last room was locked and all of their attempts to break down the door, pick the lock or any other method failed. Moving to the last room, it was a grand room that held the husk of a silver dragon, and an altar at the back.
Approaching the dragon husk, the door behind them disappeared as it awakened with a holy flame filling in where its body used to be. This undead dragon was NOT happy. After some words asking the theives to "Give it back" it engaged in combat. After defeating the dragon and laying it to rest as best they could, the altar was found to have a hollow platinum triangle that once investigated, empowered Kyan Covverre's Amulet of the Devout more than it already was. Casting Legend Lore, the party learned that Paladine had tasked this dragon with protecting a piece of the Crest of the Daughters of Paladine. After such a long life, the dragon took the noble act of embracing undeath to continue its duty as there would be nothing left if it continued in its current form.
With all that settled, the party rested, and headed to Icewall Castle in the form of Wind Walk with help from Armantaro. The party saw that the keep was heavily fortified with White Abishai, Dragon Army soldiers, likely some officers as well, it was hard to tell specific ranks from their vantage point, dragonnells, and an assortment of white dragons. This was obviously a base of operations, and more than likely where the stolen piece was kept. It was time to strategize, and more than likely fight.