I have two questions and 2 followups.
Q1: Have you read Mistborn era 1?
(if you have, please view the below comment)
Q2: Have you read Stormlight?
(if you have, please view the below comment)
They are yummy, yummy. You should eat all of them, and then you will get a nice voice in you head telling you to kill!
*takes out very unsafe atium infused cookies*
At the end of WaT, though, I believe none of the Shards truly know Hoid has the Dawnshard Exist, and, Taravangium probably has a distinct memory of killing Rayse with Nightblood.