Make a potion that applies attribute modifiers

If there was a potion that could give the user specified things, (like armor or health), then it would help with things like adventure / creative worlds and provide more opportunities for potions / potionmaking in those worlds. These would not be obtainable in survival Minecraft, but would be able to be cheated in with commands, similar to normal potions. These don't have to be potions - they could be a different consumable item that would do the same effect.

I hope you like the idea! I personally love making creative maps and this could make it more fun and easier.