Equipment items with the designation ST are part of a special themed set, and when all items of the set are equipped together your character will transform into a larger sprite. There are currently a total of 14 special themed sets, spread across 13 classes, that transform one’s character into a 16x16 sprite when fully equipped. Unlike regular untiered (UT) items, ST items can be purchased for Realm Gold through Mystery Boxes, in addition to having a rare chance to drop from enemies.
All six special themed sets that were introduced during the Kabam era (from Oryx Awesome to Phylactery Mystic) are tradable and can thus be acquired that way. Every special themed set released during the Deca era (from Dragon Tamer on) are soulbound and can not be traded.
All special themed sets, except for the now-retired Oryx Awesome Set, confer an additional stat bonus if all four items of the set are equipped together.
Some UT items are part of a set through similar aesthetics, such as the Coral Huntress or Void Archer sets. However, these sets are not considered ST because they do not transform the player to a larger sprite when the full set is equipped. Like other UTs, these cannot be purchased for Realm Gold.
As of Build X.28.0.5, Archer and Ninja are the only two classes that lack a special themed set.
The sets are organized in alphabetical order, except for the retired Oryx Awesome set.
Themed on: Unknown
2 Pieces Stat Bonus: +4 SPD
3 Pieces Stat Bonus: +3 ATT, +10 DEF
Full Set Stat Bonus: +100 HP
Overall Stat Bonus: +190 HP, +40 MP, +5 ATT, +24 DEF, +4 SPD, +7 DEX
Soulbound
Themed on: Unknown
2 Pieces Stat Bonus: +10 SPD, +5 ATT
3 Pieces Stat Bonus: +5 DEX, +10 DEF
Full Set Stat Bonus: +75 HP
Overall Stat Bonus: +190 HP, +5 ATT, +27 DEF, +26 SPD, +5 DEX
Soulbound
Themed on: Flesh Collector
2 Pieces Stat Bonus: +6 VIT, +7 WIS
3 Pieces Stat Bonus: +50 HP, +7 ATT
Full Set Stat Bonus: +100 MP
Overall Stat Bonus: +50 HP, +200 MP, +20 ATT, +15 DEF, +12 WIS, -2 VIT
Soulbound
Themed on: Unknown
2 Pieces Stat Bonus: +30 MP, +6 VIT
3 Pieces Stat Bonus: +25 HP, +4 DEF
Full Set Stat Bonus: +5 DEX, +7 ATT
Overall Stat Bonus: +100 HP, +65 MP, +20 ATT, +17 DEF, +2 DEX, +20 VIT
Soulbound
Themed on: Horrific Creation
2 Pieces Stat Bonus: +6 SPD
3 Pieces Stat Bonus: +3 ATT
Full Set Stat Bonus: +15 DEF
Overall Stat Bonus: +40 HP, +100 MP, +16 ATT, +25 DEF, +15 SPD, -8 DEX
Soulbound
Themed on: Tormented Golem
2 Pieces Stat Bonus: +3 DEF, +15 VIT
3 Pieces Stat Bonus: +10 ATT, +5 DEX
Full Set Stat Bonus: +40 HP
Overall Stat Bonus: +110 HP, +18 ATT, +22 DEF, +5 SPD, +5 DEX, +22 VIT
Soulbound
Themed on: Oryx the Mad God
2 Pieces Stat Bonus: +5 ATT
3 Pieces Stat Bonus: +5 DEX, +15 DEF
Full Set Stat Bonus: +75 HP
Overall Stat Bonus: +195 HP, +29 DEF, +12 ATT, +12 DEX
Soulbound
Themed on: Phylactery Bearer
2 Pieces Stat Bonus: +1 DEX, +2 SPD, +5 WIS
3 Pieces Stat Bonus: +40 MP, +10 DEF
Full Set Stat Bonus: +35 HP, +5 ATT
Overall Stat Bonus: +110 HP, +110 MP, +12 ATT, +25 DEF, +3 SPD, +2 DEX, +2 VIT, +13 WIS
Themed on: Geb
2 Pieces Stat Bonus: +5 SPD
3 Pieces Stat Bonus: +50 MP, +8 ATT
Full Set Stat Bonus: +50 HP
Overall Stat Bonus: +100 HP, +100 MP, +10 ATT, +20 DEF, +5 SPD, +15 VIT, +20 WIS
Themed on: Ghost of Skuld
2 Pieces Stat Bonus: +6 SPD, +1 DEX
3 Pieces Stat Bonus: +30 MP, +5 ATT
Full Set Stat Bonus: +80 HP
Overall Stat Bonus: +130 HP, +40 MP, +5 ATT, +12 DEF, +4 SPD, +5 DEX, +4 VIT, +4 WIS
Themed on: Unknown
2 Pieces Stat Bonus: +2 DEF
3 Pieces Stat Bonus: +7 ATT, +8 SPD
Full Set Stat Bonus: +11 DEX
Overall Stat Bonus: +40 HP, +40 MP, +2 ATT, +14 DEF, +17 SPD, +20 DEX
Soulbound
Themed on: Swoll Fairy
2 Pieces Stat Bonus: +50 MP
3 Pieces Stat Bonus: +5 DEF, +5 SPD
Full Set Stat Bonus: +50 HP, +2 ATT
Overall Stat Bonus: +100 HP, +100 MP, +5 ATT, +33 DEF, +5 SPD, +5 VIT, +5 WIS
Themed on: Twilight Archmage
2 Pieces Stat Bonus: +2 ATT, +2 SPD, +2 DEX
3 Pieces Stat Bonus: +15 MP, +5 DEF
Full Set Stat Bonus: +40 HP
Overall Stat Bonus: +80 HP, +35 MP, +5 ATT, +19 DEF, +5 SPD, +5 DEX, +10 WIS
Themed on: Oryx the Mad God
Set Bonus: none
Overall Stat Bonus: +140 HP, +36 DEF, +2 VIT, +2 WIS