Maple Union mules recommended minimum is at least 140 for S rank. 150 is the most recommended because you need 6k legion to unlock the board.
Just get your mules to level 140 and then to zak on a rune every day.
Your should aim for 6K Legion minimum which requires you to have 40 characters at Lvl. 150.
So the 150 is if you have all 40 characters at 150 you will have 6k legion and thus access to the entire grid.
If you can max out 2 outer sections (6k+ Legion), go full EXP + Crit Rate. You want all your mules to reach 100% crits for consistent 1-shotting
I leveled all 28 Mules to lv 100 and Zakum to 150, getting all 28 Mulesto 100 took 2 weeks and zakuming to 150 took a month lolz and I must say Jett is the hardest leveling class .., If your only aiming for 6k legion u really only need 28 different classes to be effective and the remaining you can make 11 Aran as they are the easiest to level to 100. As for me I level all 40 different classes for long term progress
The Maple Union system only counts the top 40 characters in your world, regardless of the number of slots you have.
I think once you reach 8k union, you are able to max 3 outer grid. In this case, you are able to max Crit Dmg, Buff Duration & Boss Dmg. Then you probably have a few grid left for INT/MA.
u need 6k to unlock all squares. 6k can fill up 2 outer areas. 8k can fully fill up 3, presumably u’re aiming for crit dmg, boss dmg and ied.
