my blessing would probably be presence (I'm kinda dumb) and my spikes would probably be feruchemy(tapping connection as a Sandra would be invaluable, along with other thing), allomancy (compounding would be nice, also emotional allomancy), and probably lightweaving(for illusions and to escape to shadesmar if things go bad)
loved this question
also now all I can think about is how awesome I would be, so thanks for helping me fail my math class...
if I didn't NEED to have the four traditional blessings, I would do Elantrian(so much adaptability, and I could store aeons in my coppermind, so I could learn it a lot quicker and know more)