Golden Dandelions and the Potion of Shrinking

Golden dandelions need a potion. All of the other golden plants have one, and it seems to be part of quirky minecraft logic that this type of thing has magical properties.

A Potion of Shrinking is already easy to implement, all of the necessary features required are already in the game since Mojang added entity sizing. It also fits in thematically with the established purpose of the Golden Dandelion: to keep small animals small. It should also be able to be distilled in a potion to make entities smaller (perhaps unless they are already babies).

Imagine the possible uses for this; it fits in perfectly with already established gameplay patterns. It would be AMAZING for parkour. I can also imagine it would provide unique and interesting interactions with hide and seek and pvp, although with pvp it may need to be paired with a speed and attack strength reduction to be balanced. Imagine a parkour course where you need to be able to fit through half slabs or stairs. Imagine utilizing a niche in a corner as an entrance for a secret base. Imagine running from an assailant while you shrink to become harder to hit, and they must switch to more area of effect tactics and precise hits to strike you. 

I would also imagine more technical players may find very creative ways to use this, such as for entity cramming effects, redstone, minigames, and more. It's such an easy, fun, impactful, and lore-accurate thing to create using existing features.