It drops at character level 70, and originally only dropped during the Season One for Seasonal characters. After the end of the Season One, it drops for normal characters as well.
It is one of the few set items with a Legendary unique affix. Its movement speed bonus can go above the normal 25% limit, but only lasts as long as the character did not take damage in the last 5 seconds. Note that unlike other similar effects, for this bonus, completely absorbed damage will not break the speed bonus.
Stats (Level 70)
Krelm's Buff Belt
- 440 - 506 Armor
- +500 Vitality (2 items)
"Whereupon having vanquished the Oglak beast that had wrought unforetold terrors upon the gentle folk of Bibbly Wood and devoured a ten-stone weight worth of villagers, didst they hitherto beseech Krelm Thurmgrep the Immodest to remain henceforth as the village champion and erected a statue to honor his name hereinafter." - Excerpt from Fanciful Folklore and Stories Meant to Frighten Small Children