Lost Golem Set

Lost Golem
Set Generation
Class Trickster
Themed on Tormented Golem
Drops From Agonized Titan (Carved Golem Remains)
Marble Defender (Brain of the Golem)
Tormented Golem (Golem Garments)
Golem of Anger (Rusty Cuffs)
Marble Epic Quest Chest (Carved Golem Remains / Brain of the Golem / Golem Garments / Rusty Cuffs)
Obtained Through Mystery Boxes
Mystery ST Chest
2nd Piece Bonus +3 DEF, +15 VIT
3rd Piece Bonus +10 ATT, +5 DEX
4th Piece Bonus +40 HP
Subtotal of Bonuses +40 HP, +10 ATT, +3 DEF, +5 DEX, +15 VIT
Overall Stat Bonus +110 HP, +18 ATT, +22 DEF, +5 SPD, +5 DEX, +22 VIT
Final Stats at 8/8 830 HP, 252 MP, 83 ATT, 47 DEF, 80 SPD, 80 DEX, 62 VIT, 60 WIS
Total XP Bonus 22%
Soulbound Soulbound
Released Patch X.16.0 (Aug 2017)

Notes
The Lost Golem Set is the ninth special themed set to be released. It drops from various enemies in the Lost Halls.

As the set drops from a lategame dungeon, it is expected for all these items to have some sort of viability. The Brain’s unique, stationary decoy can be very useful, and the lack of teleport can be ignored in order to activate the whole set. The dagger’s range and this set’s VIT also make this set amazing if you don’t have a great pet (though whenever you should be doing the Halls without one is another question). The armor is fairly strong on its own, while the ring is really only good to activate the entire ST bonus.

History
Before LH 2.0, this set gave:

Set Additional Bonus: +40 HP, +3 DEF, +15 VIT, +6 ATT, +5 DEX
Overall Stat Bonus: Wearing the entire Lost Golem set will grant in total:
+80 HP, +8 ATT, +22 DEF, +5 SPD, +3 DEX, +27 VIT

Keep in mind that these bonuses were before the X.31.4 update, so one would have needed to wear the entire set in order to receive any additional bonuses.