How To Get The Most Renegades Coins

If anyone is farming 20% weapon scrolls, just make a Jett char, accept all quests and you'll get 12 coins by the time you're level 15.
As OP said, you'll start with 8 coins.
You get 3 more from the Phantom letter at lv 13, and another from the level up challenge at 15.
Takes about 10-15 minutes to do to get one scroll.
Buy the scroll, throw it in storage, delete, remake.
Does anyone know if there's a limit to this?

I don't think so, but if many people start doing this, maybe Nexon will put a limit.