Check out the patch notes for the v17 Precursor Update here:

pet exp diminishing returns removal

MapleStory 2 Rep: 1,605
Posts: 250
in Suggestions and Feedback
title's stupid feature needs remove, white pets gives 1.5k at start and after 12 fuses after the 24 daily bonus diminishes to 1k each. Idk if bonus counts in there but thats just ridiculous, either remove it or decrease the diminishing return value. comon nexon stop brain storming brain dead systems... while bots r going fking wild