So instead of a stupid spellbook they finally changed for something which isnt about just luck!
Its about skill!

WHATS THE BEST?!
Ok so 4 days = 4x 24 hours = 96 hours

You have a 6 hours stop so 96/6 = 16
So you have 16 tries at this if you do not sleep! So you can get it for free if you show skill for it!