先搞定如何给生物穿戴装备:
/replaceitem entity @e[type=Zombie] slot.armor.chest iron_chestplate 1 0
{display:{Name:"铁胸甲"}}
给范围内所有僵尸戴铁胸甲
再接上脉冲

当然,这类命令有拓展:
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更硬的苦力怕: /replaceitem entity @e[type=Creeper] slot.armor.chest iron_chestplate 1 0
注意:苦力怕穿戴装备看不出来
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