"function": "if_beyond_X",
"functions": [
And now for the armour down here. By the way, you can use this same "equip" function for weapons too.
"function": "equip",
"id": "number",
The id for the item armour/weapon of course."override": "true/false",Just a true-false statement. Not needed, but it can override any vanilla armours the mob tries to spawn equipped with.
"slot": "0-4",
The slot for the mob to equip the armour/weapon with. 0 is hand, 1 is feet, 2 is legs, 3 is chest, and 4 is head.
"drop_chance": "0.1"
Now, percentage of chance is in decimals. So 0.10 = 10%, 1 = 100% and so on. We'll need to put the numbers in the value for "count".
"damage": "30",
Not needed, but for the damage/metadata below, you could use something like 1~20 or something like that so it'll randomly be at 1 durability or 20.
"item_stats":
I'm thinking this is where enchantments go. I have no idea how to apply enchants though, sorry :(

{"drops": [
"function": "remove",
This remove function removes any id you want form the mobs drops.
"item's id here": "number",
"damage": "number"
},
{
"function": "all",
The all function is basically the percentage chance this will happen, and this can be used for anything, in the mobs stats, drops, etc.
"count": "0.05"
So that up there is 5%.
"functions": [
"function": "add",
Add just adds any id you want to the mob's drops.
"id": "number",
"damage": "number"
]