Truesteel Reshaper

I did some digging, the possible affixes (stat range for stage 1) are:

of the Fireflash
70 - 105 Critical Strike
70 - 105 Haste

of the Peerless
70 - 105 Critical Strike
70 - 105 Mastery

of the Quickblade
70 - 105 Critical Strike
70 - 105 Versatility

of the Savage
70 - 105 Critical Strike
70 - 105 Multistrike

of the Feverflare
70 - 105 Haste
70 - 105 Mastery

of the Aurora
70 - 105 Haste
70 - 105 Versatility

of the Deft
70 - 105 Haste
70 - 105 Multistrike

of the Harmonious
70 - 105 Versatility
70 - 105 Mastery

of the Merciless
70 - 105 Mastery
70 - 105 Multistrike

of the Strategist
70 - 105 Versatility
70 - 105 Multistrike

Happy RNG hunting!

bonus armor can only be found on neck, rings, trinkets

Gives the best ratio for skill ups. It has a 3+ skillup all the way to 700 for 10 [item=108257].