How can I make mobs stronger?

I'm working on a zombie boss, and I'm giving it a sword, but this is deemed useless since it won't use the sword. So is there any way I can make its natural attack damage bigger? To be honest, I just started doing commands a while ago so I'm no professional at this, but I have got the zombie's armour done. And I'm not talking about strength potions, because I need the zombie to do about 5 hearts of damage to players (excluding armour).

Solution 1:

I'm assuming you're using a command block with a summon command. Basically. you need to specify the data tag on the command to give the mob the desired attributes. For attack damage, that would look something like this:

summon Giant ~ ~1 ~ {Attributes:[{Name:generic.attackDamage­,Base:10}]}

Here attackDamage is measured in half hearts, so this command would span a giant zombie which does 5 hearts of damage per hit.

See also: this page with some more information about attributes.

To get a command block, type:

/give <username> minecraft:command_block