Once the Mobile Mansion reaches level 6, the Mobile Mansion goes from temporary to permanent.
Decorations can often spice up the Mobile Mansion! Obtain decorations by doing any from the following:
Defeating Elite monsters and bosses
Defeating Inferno Wolf
Hunting monsters in https://www.mmoah.com/maplestory-2
your level range (20 levels below and 20 levels above)
Completing theme dungeons
Completing Dimension Invasion and FriendStory
2x EXP Coupon (15 Min) (x7): Movable between characters about the same world, 14-day duration.
Selective 4 Slot Coupon (x3): Movable between https://www.mmoah.com/
characters around the same world, 14-day duration.