Elves in One Command

Hello and welcome to another one command creation! This one requires Minecraft snapshot 15w50a or greater. Now let's get straight to it.

Spawning Elves:
There are a couple ways of spawning an elf from this creation. One way is by finding an elf that naturally spawned. Another way is by using the spawn eggs given by the machine. Finally you can spawn them with commands, but that is much more difficult than the other possibilities.

Presents:
Presents are dropped by all the elves. These can be also crafted. The crafting recipes are as follows:
Diamond + Chest = Red Present
Diamond block + Chest = Green Present

All crafting recipes require the items to be thrown on the ground on the same block. The red present has the same drops as a blacksmith chest has and the green present has the same drops as an end boat chest would have. The presents can be placed if you wish to decorate your home with them, but the can also be opened. To open them, put the present on the head of an armor stand.

Hostile Presents:
Hostile presents give you the same drops as their fellow presents when opened(red and green presents) except that they do not drop the present item directly.

Passive Elves:
These elves deal no damage to you and follow you around. Currently they can deal damage due to bugs in the way attributes work with zombies.

Credits:
-Made by ClassyElm
-Used MCStacker
-Used Command Combiner 1.9
-Used JSON Creator for Minecraft
-Used 1.9 Loot Tables
-Credit to the user "ChristmasElf" for the usage of their player skin's head.

Tips:
-This command requires 15w50a or greater.
-This command removes baby zombie villagers and replaces them with the elves and presents.
-This command affects zombie exp. farms, so if you wish to install the creation, be careful.

Command:
Note: The command requires Minecraft version 15w50a or greater.
1.9-1.10: http://pastebin.com/yezupZMr
1.11(16w33a)+: http://pastebin.com/bvq1KMrC