It is possible to have x3 SK without spending money. I got my first in my 14th card pack and immediately reset the box. Got my second around 50 packs in reset the box again and the third SK was in the 2nd pack. I'm not saying I've never spent money on the game but most of the money was spent after Ultimate Rising was discontinued because I assumed Neo-Impact would be discontinued shortly after....
I got 1
Sphere kuriboh months ago and let me tell you. It's overrated. No need to have 3. If your looking for 1-cool. 2- your trying to cheese, 3- your just scared and think you need 3 sk to win n protect yourself. I've made
Kog 10 times with 1 or no kuriboh. My current deck doesn't even have a sk. I would rather use security orb. Sk is decent for ritual decks but nobody should want 3