(1.13.x) /summon zombie ~ ~ ~ {NoGravity:1b,AbsorptionAmount:9223372036854775807f,Health:9223372036854775807f,CustomName:"{\"text\":\"Dummy\",\"bold\":\"true\",\"italic\":\"true\"}",ActiveEffects:[{Id:2b,Amplifier:255b,Duration:20000000},{Id:10b,Amplifier:255b,Duration:10000000},{Id:11b,Amplifier:255b,Duration:10000000},{Id:12b,Amplifier:255b,Duration:10000000},{Id:13b,Amplifier:255b,Duration:10000000},{Id:18b,Amplifier:255b,Duration:10000000}],Attributes:[{Name:generic.maxHealth,Base:9223372036854775807},{Name:generic.knockbackResistance,Base:1.0},{Name:generic.armor,Base:30}]}
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