TMS "Legendary Earring" event

Lv10 - +1All stat, +1w/matk, will expire, untradeable
Lv30 - +2All stat, +15w/matk, no time limit, untradeable
Lv50 - +3All Stat, +20w/matk, no time limit, untradeable, tradeable with SoK
Lv70 - +5All Stat, +30w/matk, no time limit, untradeable, tradeable with PSoK
Lv90 - +10All Stat, +50w/matk, no time limit, untradeable, tradeable with PSoK
Lv100 - +50All Stat, +100w/matk, no time limit, untradeable, tradeable with PSoK

Sum up quest:
Collect 5 pieces of fragment from monster near your level and trade it with a NPC to get Lv10 Ring.

You will need to Gach for the ingredient and take the ingredient to an NPC to enchant the earring, however, it could either upgrade or downgrade the earring. Note that it could downgrade a couple of levels in one go.

Source: http://tw.beanfun.com/maplestory/event/2...index.html

EDIT: Forgot to mention this, this ring can be potted.