My Black spirit is now at level 51 and i've been reading the story and words that pops out as well but i don't notice stuff that would prevent me to do x10 buy on shakatu shop 

same me also... black spirit level 90...

CMIIW, but according to what I know, you need to get a title first (It's either "Infatuated with Shakatu" or "Shakatu Shop Regular"). I forgot how I got the x10 option, but drawing 10 times at once doesn't increase your luck, at least that's how it went for me. I have 4 yellow equipments and only the sword came from x10

I just want to draw faster than going through 1 by 1