Featherfall Potion

The Featherfall Potion is a buff potion which grants the Featherfall buff when consumed. The buff slows the player's fall speed and gives a bit of control of gravity to the player, allowing them to jump higher than normal.

The player can hold the key to fall like normal in case of a rush, and the player can also hold the  key to slow their fall even further or jump ridiculous heights. While under the effects of both Featherfall Potion and Gravitation Potion, holding the key will make the player fall up at normal speed. The player will fall up at a slowed speed when holding no direction.

The effects of the Featherfall Potion can also be used to jump higher. By holding, grappling a platform above you, and releasing the grapple before it is complete, one may achieve jumping heights of several hundred blocks.

Fall damage is also negated, even when falling normally. It is worth noting that the Featherfall Potion also increases the distance players are knocked back when hit by an attack.

Trivia
The feather in the buff looks reminiscent to the Cape Feather from Super Mario World.

History
Potion de chute lente 가벼움의 물약 Featherfall Potion Зелье пёрышка 羽落药水