Cover Them In Armor mod increases the chances of mobs (such as skeleton or zombie) will appear in armor. Also, each zombie will appear with a sword in the hand (from stone sword to diamond sword).
It is also worth noting that with some chance the enderman will be able to start a fight with you with a ranged attack, which has a 100% chance of hitting.
By the way, each pillager will appear with armor.
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Shevchyk
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ARR
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required
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