Aqua Frost Boots

Aqua Frost Boots are a Hard Mode accessory. When water is landed on or ran across, the top will freeze into Thin Ice. Thin Ice created this way will spread across the surface of a body of water. If 5 adjacent blocks of Thin Ice are next to the shore, and the player's speed is increased by more than 30%, Frost will spread from the shore, and will keep spreading. Because of this, Aqua Frost Boots can be used to spread ice throughout the world.

Crafting
Crafted at:
 * Water Walking Boots
 * 3 Frost Cores
 * Tinkerer's Workshop

Credit

 * Credit for the crafting recipe goes to SlayeroftheBad.
 * Credit for the name goes to TerrariamcSwaggins.