[
{
"mob": ["minecraft:zombie"],
"daycount": "lt(5)",
"when": "onjoin",
"result": "deny"
},
{
"mob": ["minecraft:zombie"],
"result": "allow",
"random": 0.125,
"mindaycount": 30,
"armorhelmet": ["marbledsarsenal:riot_armor_helmet"],
"armorchest": ["marbledsarsenal:riot_armor_chestplate"],
"armorlegs": ["marbledsarsenal:riot_armor_leggings"],
"armorboots": ["marbledsarsenal:riot_armor_boots"],
"helditem": [{ "empty": true }]
},
{
"mob": ["minecraft:zombie"],
"result": "allow",
"random": 0.125,
"mindaycount": 30,
"armorhelmet": ["marbledsarsenal:swat_armor_helmet"],
"armorchest": ["marbledsarsenal:swat_armor_chestplate"],
"armorlegs": ["marbledsarsenal:swat_armor_leggings"],
"armorboots": ["marbledsarsenal:swat_armor_boots"],
"helditem": [{ "empty": true }]
},
{
"mob": ["minecraft:zombie"],
"result": "allow",
"random": 0.125,
"mindaycount": 60,
"armorhelmet": ["marbledsarsenal:desert_military_armor_helmet"],
"armorchest": ["marbledsarsenal:desert_military_armor_chestplate"],
"armorlegs": ["marbledsarsenal:desert_military_armor_leggings"],
"armorboots": ["marbledsarsenal:desert_military_armor_boots"],
"helditem": [{ "empty": true }]
},
{
"mob": ["minecraft:zombie"],
"result": "allow",
"random": 0.125,
"mindaycount": 60,
"armorhelmet": ["marbledsarsenal:winter_military_armor_helmet"],
"armorchest": ["marbledsarsenal:winter_military_armor_chestplate"],
"armorlegs": ["marbledsarsenal:winter_military_armor_leggings"],
"armorboots": ["marbledsarsenal:winter_military_armor_boots"],
"helditem": [{ "empty": true }]
},
{
"mob": ["minecraft:zombie"],
"result": "allow",
"random": 0.125,
"mindaycount": 90,
"armorhelmet": ["marbledsarsenal:olive_juggernaut_armor_helmet"],
"armorchest": ["marbledsarsenal:olive_juggernaut_armor_chestplate"],
"armorlegs": ["marbledsarsenal:olive_juggernaut_armor_leggings"],
"armorboots": ["marbledsarsenal:olive_juggernaut_armor_boots"],
"helditem": [{ "empty": true }]
},
{
"mob": ["minecraft:zombie"],
"result": "allow",
"random": 0.125,
"mindaycount": 90,
"armorhelmet": ["marbledsarsenal:black_juggernaut_armor_helmet"],
"armorchest": ["marbledsarsenal:black_juggernaut_armor_chestplate"],
"armorlegs": ["marbledsarsenal:black_juggernaut_armor_leggings"],
"armorboots": ["marbledsarsenal:black_juggernaut_armor_boots"],
"helditem": [{ "empty": true }]
}
]

Also can someone tell me how to make it so all mobs don't drop exp with the experience.json?