An observation I realized. :idea: If you learned one before the hotfix, it was uncommon and will stay uncommon. If you bought it before the fix and then learned it after the fix, it will become rare. Of course buying one now, it will always be rare. If you bought an uncommon but want it to be rare, ...
Found Ruukti, black siberian tiger, stealthed in a cave in The Bamboo Wilds, Jade Forest. Lvl 85 elite, 7,108 - 8,656 Dmg, 11,090 Armor, 395,198 HP, tamable
Ro'shen, white siberian, Den of Sorrow or cave near DoS, Bamboo Wilds. 85 elite, 7431 - 9050 dmg, 11090 Armor, 434717 HP, tamable
It's name is Shadril, Jungle Spider skin. Lvl 38, 2,270 HP, 54-74 Dmg, 1,661 Armor. Located in the mine at Hearthglen. Named quest mob. Again, can't be tamed.