4 Potential Lines!?

I can confirm this is real. There is a known method for adding a 4th line to items that already have 3 lines. Nexon is going to release another miracle cube to add a 4th line to things that already have 3 and a discovery was made in order to access the 4th potential line now.

Does this exist in KMS?

I know KMS got some stamp thing that adds a line to 2-line items (I use the word 'know' loosely here), but I couldn't remember if they ever added a 4th line.

Suddenly I wonder how many Premium Cubes haven't been bought since, surely, if they can go from 3-lined to 4-lined, they can go from 2-lined to 3-lined.

I'm a pro at MS Paint, son! Don't be hatin'.

I know how to work a rectangular selection tool!