The Liquid Enchanting Mod allows you to enchant every piece of armor in the game with potions. This means that for as long as you or anyone wears the armor, the potion effects will be applied.
This is both good and bad, because while you can apply positive potions like speed, fire resistance, and strength:
You can also have negative potions applied like poison, slowness, and weakness. And while you probably wouldn’t apply these in single player games, these would play a role in multiplayer servers and game servers to handicap players.
You can also apply potions to swords, which gives you an even broader range of power.