That drop is possible. You can check the in-game codex, then go to legendex to look at Wizard, Warrior and Rogue gears. You can also look at the eternal legend tab at the bottom.
The cyan colored affix is one that can be dropped with eternal. There are two other affixes that can be cyan on that gear → crit chance and deadly strike. The Dev will review this account anyway. Check link below for a little more on the legendex, dust etc.
