Level 67-69: +3 Claw Booster per level
Level 70: +1 Claw Mastery (maxed) +2 Claw Booster (180 seconds)
End Results

20 Claw Mastery
3 Endure
30 Drain
20 Haste
30 Critical Throw
18 Claw Booster
Damage comparison with normal thief
The damage comparison will be divieded into three categories by equipments: (non-upgraded, common-upgraded, godly-upgraded), and for all the analysis here, (1) refers to dexless thief, (2) refers to normal thief. And the basic damage calculation formula is as follows:

[LUK*0.85 + (STR+DEX)*0.25] * att / 25
Equips To Wear
Level 25 Your base DEX at level 25, with an additional Luk +3 gained from a Brown Bamboo Hat and Luk +3 and work gloves(scrolled or non scrolled). By now you should also have a garnier(scrolled or non scrolled) and you should upgrade your w/g with Glove Attack scrolls. You'll be using this until level 43 when you get a maple stroy mesos Kandayo (scrolled or non scrolled)or a maple stroy mesos  claw at lv.35 then dayo at lvl.43. (edited by ID가없어여) KMS ...

Level 30 At level 30 your base DEX will still be 25, but by scrolling (or buying) your sauna robe to LUK + (how much u scrolled it) and the rest you can get by switching between your Brown Bamboo Hat (for LUK +3). You won't have no dex to equip any new gloves or claws or etc so stick with the w/g and dayo or claw.

Level 40 At level 40 your base DEX will still be 25.

Level 50 By level 50 your base DEX will be 25. You'll still be wearing your LUK +3 Brownn Bamboo Hat, ATT w/g. LUK +(how much u scrolled it) from cape, and a LUK + (how much u scrolled it) sauna robe DEX scrolls are not needed. This should give you a total of LUK + (how much u scrolled it). You can try to scroll an even better sauna robe by doing a 10% or 60% on your first slot and 10-60% on the remaining slots. (u can use a scrolled luk Zakum hat to at this lvl)

By the time you're level 50+ you will mostly be training in Ossyria, which has a slippery ground, meaning you'll need to replace your thief shoes with snowshoes, preferably scrolled for LUK. Do not waste your time scrolling your shoes for Speed or Jump because your Haste will take care of this. But you'll benefit more form straight LUK shoe scrolls because they also add Avoid. It is possible to be DEXless by wearing snowshoes that have been scrolled with shoe LUK . However, you'll be sacrificing a lot of ATT without much benefit in avoiding, so it's better to stick with LUK scrolls.