There are a lot of equipment in the Realm of the Mad God game, unlike tiered items and the untiered, there is also st equipment.
Here at RpgRip you can buy rotmg sts, any of them.

What is ST?

St’s – is special themed — specially visualized equipment that gives various visual changes to your character. Some of them are also an improved version of the equipment and give a large increase in stats, and such as, pixie sword, have an unique effect:
4 Shots
You can purchase swoll paladin set, that include this sword, or buy pixie separately.